/sci/ - Science & Math

Jupiter and Saturn in retrograde
>animooted

The Pleiades star cluster, also known as the Seven Sisters

It's just a big explosion, but I can't help but like it.

Earth or Mars?
One of these pictures was taken on Mars by the Spirit rover, the other was taken in a desert on Earth, can you tell which is which? Can you tell the difference between your homeworld and an alien planet?

>>6079903
I think right is mars,clearer atmosphere (no fog in the background). They both look very similar though.

>>6079862
this being actual footage and not cgi is incredibly awesome

>>6079951
That is correct! Although that isn't fog you're seeing over the Earth on the left, but normal atmospheric distortion of light. Since Mars has a thinner atmosphere, it doesn't distort light as much, so it has a crisper looking horizon.
>NASA spent $2.5 billion dollars
>1 year in flight
>7 minutes of terror to land
>to draw a dick on Mars

>>6079903
>>6079951
>>6080014
guess this one

>>6080047
That's Viking on Mars!

The surface of Titan

>>6080014
>If feminism is real then why did Marsians praise the phallus?

>>6080193
>praise
Humans say 'shit' all the time too. Doesn't mean we hold it in high regard.

for me it's all about Europa. Every time there's a huge Powerball lottery i buy one ticket, hoping to win enough to fund a robotic probe to melt through the ice. shit would be so raw.

>>6079862
>en route to mercury
>mfw not traveling towards the light

>>6080134
Would it be possible to launch something into Jupiter and have it find out what's inside it? or has that been done?

>>6080257
Juno is on its way to Jupiter to do just that.
http://missionjuno.swri.edu/

>>6080257
Galileo shot a probe down into Jupiter- pretty sweet.

>>6080245
Because a direct flight to Mercury would be unreasonable. The craft would go too slow and it would be unlikely to enter orbit around the planet, more likely to crash into the Sun. MESSENGER took an orbital path and received gravity boosts from Earth and Venus.

>>6080245
You must know allot about orbit and how NASA gets their probes to their destinations.

>>6080047
>>6080134
> wanted someone to ask why the sky was blue on mars
> no one did
> ):

Earth from Saturn's orbit.

>>6080231
not true. a lot of people LOVE to poop.

A recent study of the sideways planet in infrared revealed that the winds do in fact blow fierce from Uranus.

Earth and Moon seen from the red planet. Pic captured by the HiRISE camera on board the Mars Reconnaissance Orbiter.

Venus and the Milky Way over Yosemite National Park.

>>6080873
is that a HEXAGON on uranus lower end?like that on saturn?!
omfg we're doomed!

>>6079862
That specular reflection looks so fake.

>>6081219
It's the reflection of sunlight bouncing off the spacecraft. You can see it on this picture of the Earth too in the center of the Indian Ocean.

earth, naturally

dem clouds

>>6080257
Yeah, they did it once.

The probe fell for a while, then got crushed by Jupiter's gravity.

There is a large craft [alien] generating Jupiter which is not actually a proper planet. The RED EYE is the point of entry/exit for lesser drone crafts.

The drones move into earth and about or beyond the solar system. This is HIDDEN from the common serf (you),, but you can clearly witness the Jovian activity on a clear night. The crafts visit Earth, but usually plunge into the deep sea with limited human contact. The material is difficult to damage, but these creatures have left evidence.

We are domesticated primates produced as slaves. We are still being bred. Humans are like the common dog. Woof woof!

>>6081738

>>6081738
They have breeder labs on the Jovian moons. New creatures and archetype humanoids are developed and plotted.

>>6081748
Oh gosh, what a pleasant puppy.

>>6081753

>>6081738
>>6081738
Let's stick to ideas and theories that have been peer reviewed ITT. Or better yet, no ideas or theories, just post pretty pictures of planets and moons.

Four moons of Saturn. Titan, the largest of Saturn's moons, in the background with Dione in front of it. On the right edge of the rings is Pandora, and tiny Pan, the inner most of Saturn's known moons, orbits inside the Encke Gap of Saturn's A-ring.

>>6081784
This is a close up on Pandora from Cassini. Remember James Cameron's crappy Dances With Smurfs? It was set on this potato-shaped, uninhabitable moon. Good work Cameron. Way to research your stories.

Neptune and its largest moon Triton.

this is a good thread and you should feel good

pic: photobombing a crater on Mars

Until New Horizons reaches Pluto in the 2015, this is the highest resolution image we have of the frigid dwarf planet. I can't wait to find out what these dark and light regions are.

Earth at night from the Suomi NPP space craft

>>6082067

>>6082132

Best planet in the solar system

>>6081784
just wow

Saturn in silhouette from Cassini
>also the Earth is visible in this pic as a tiny dot just inside the G ring.

>>6082145
What the fuck is Peru doing?

Dust Devils on Mars (animated).

Surface of Venus.

Pictures like this fascinate me. The fact that these are clear, true-colour images from another planet millions of miles away is just mind-blowing.

Anybody have telescopes? Recommendations for < $500, could go more if it's worth it.

My dad has a cabin in the woods where everything is dark, the stars are nice. I've been using binoculars but would like to make the move.

A book for amateur astronomy might be nice as well, I don't know much apart from what I learned from those space documentaries I watch when drunk.

>>6082362
How long did it take that probe to melt?

>>6082405
Celestron and Meade both have a few telescopes for around that price.
>Sometimes, when conditions are just right, you can see sunspots with the naked eye
>although, even when conditions are right, it's still not a good idea to look directly at the Sun.

>>6082356
ghost in the 8th frame, half life 3 confirmed

>tfw I dreamed about being in a rough decent into an alien planet with a band of colonists
>tfw it never happened
>tfw
Also. Just moved mountains to ge this book. It's an old pic but you get the idea.
>>6082423
Some minutes. The same for the titan one.

>>6082445
So would something like this fit most of my needs?

http://store.meade.com/etx-90-maksutov-cassegrain-portable-observatory.html

There must be like an almanac or something right? So I can know when I have a chance to see planets or moons.

>>6082496
What exactly are your needs? I mean, you can spot jupiter's moons with a child's telescope depending of the bloody light pollution.

>>6082502
To look at cool things in the sky I guess, there's no light at all except maybe a slight bit from a town 30km away. If I turn out my lights the sky is black and I see tons of stars.

I guess I'd just like to get the most of it.

>>6082514
yeah... Ligth pollution is shit. The only time I got to view the Via lactea was in the amazon.......... Fucking ligths.

earth

>>6082423
are you really THIS incapable, that you even don't know how to use wikipedia? The here already given information is more than enough to find all the relevant articles...

All the water on Earth, balled together like this, would have a radius of about 700km.

>>6082658
All the water on Jupiter's moon Europa would have a radius of nearly 900km!

Saturn's rings in true color. This is what the rings would look like to a nearby human observer.

>>6082658
>>6082662

mind=blown

Zodiacal light, also known as a false dawn.

Sunrise on mars.

>>6079875
>just a big explosion
>just
It's a self-sustaining explosion. Which is fucking SUPER stupendous

>>6082658
Bro, what are you talking here. I looked it up and wikipedia says it's a cube with a side length of 1200 km.

Remember when we flew these?

>>6083682
aww yeeaah

>>6080973
This wasn't from Mars. MRO took this as it was leaving the Earth.

>>6083689
that picture was taken in 2007. The MRO entered orbit around Mars in 2006. It was taken from Martian orbit.

>>6083677
Volume of a sphere with radius of 700 km
1.43676×10^9 km^3

Volume of a cube with edge length of 1200 km
1.728×10^9 km^3

Negligible difference given that these are estimates.

Compare that to Europa in >>6082662

Volume of a sphere with radius of 900 km
3.05363×10^9 km^3

>>6083684
Atlantis blasts off!
>animooted

This picture never ceases to amaze me, even moreso on video. I can only imagine what it would be like to actually experience it.

The night sky over Flagstaff, AZ, USA, the world's first Dark Sky Community, a town with no light pollution and a natural view of the stars.

Fun Fact: Jupiter emits twice as much energy as it receives from the Sun.

>>6084218
Saturn and Neptune also emit more light than they receive from the Sun, but Uranus does not.

>>6082470
w-whats that little dot near the yellow stick?

A shadow of one of Jupiter's moons, Enceladus I think, but not sure.

>>6084237
They emit more light or more energy? wut.

>>6082493
>Titan
>melt

>>6084237
>>6084218
whoa what?
are they fusing?
is it just glowing from all the heat and pressure?

>>6082362
> The fact that these are clear, true-colour images from another planet millions of miles away is just mind-blowing.
Holy fuck.

That crust looks volcanic and everything.
That picture makes me want to learn so much about it.
In the third picture did a piece fall off?

>>6084408
well, both actually. They emit energy in the form of infrared light.
>>6084422
It's partially residual heat from when Jupiter formed, but mostly from lots of radiation decay.

>>6084447
researching made me sad
:(
non-editted pic 1

>>6084456
pic 2

>they arr rook the same

>>6082662
Damn why havent we sent a probe to Europa?

Imagine a undersea space base.

>>6080047
what, the sky is blue on mars from the surface?

>>6084570
No, thats evidence that the picture was taken on Earth.

The sky on Mars is crimson.

>>6084570
thank you!!

Bill Nye came to my school to explain this.
The first pictures from Mars came with a strange blue sky.
The pictures weren't properly calibrated for Martian light, they were calibrated for Terran light.
To adjust them they needed to look at the shadow of something, Bill Nye happened to be in the room and he suggested a sundial.
(He's completely obsessed; most of his talk was about homemade sundials).
So now on every probe we send to mars, we send a sundial, thanks to Bill Nye the Science Guy.

http://marsrover.nasa.gov/mission/spacecraft_instru_calibr.html

>>6083665
9/10, currently making a background with this

The apparent size of the Andromeda Galaxy is 8 times bigger than the Full Moon!

Does this look familiar? It's the far side of the Moon.

Jupiter's moon Io in true color.

>>6081637
dude. what?

the spacecraft is smaller than a pickup truck, no way in hell it reflects enough light to be able to detect it again _as it bounces back out into space from the surface of the earth_

>>6083682
impossible. nobody here is older than 12.

>>6084587
dude. bill nye is a retard and you are a troll, the sky on mars is blue, and your link is misleading, there is another nasa page explaining this fact.

>>6085236
>the sky on mars is blue
Well, of course it is!
Along with all the oxygen and various life forms!

>>6085236
nope. This is a true color image of the Martian sky taken by Pathfinder. This, NASA says, is how the noon sky would look to a human observer.

Why haven't we built a ship and sent all transhumanists and positivists to die in a far flung asteroid?

>>6085236

Bitches don't know bout my Rayleigh Scattering and atomic emission lines...

The visible spectrum of the Sun

You guys ever get scared of the thought about us being alone in the universe?

This pic is of a terrestrial test fire of the ion propulsion engine currently on board the Dawn space craft on its way to study the dwarf planet Ceres.

That's right, ion engines aren't just science fiction.

>>6085298
nope. If we are, then the whole universe is ours to take.

>>6085298
I personally don't think it is possible for us to be alone.

>>6085301
A shame they can barely lift a sheet of paper.

>>6085317
They work really well over long distances though.

>>6085325
I know.. I just get cheaply into orbit so the technological dance with mass and energy into a minuscule ship could cease forever.
>tfw we'll never have huge ass chemical powered ships...

>>6081719
Better have cloud insurance motherfucker.

>>6081947
Are you seriously telling me we don't have a detailed image of pluto yet?

>tfw have really good OC sky photos but they're to big to show to /sci/

>>6085381
Nope.

>>6085393
Please show us your OC!
http://www.picresize.com/

>>6085391
So it's probably yellow and not blue?

>>6085397
we'll find out in 2015

>>6085396
wow...didn't know that existed
I've just been resizing pics in paint

>>6085404
what about that other planet beyond pluto or whatever, planet x?

>>6085411
We'll have to send another craft to study Eris and Makemake. They won't be close enough to Pluto for New Horizons to study the two farthest known dwarf planets.

>>6085411
There are many bodies on more bodies than the commonly listed. Bordeing the thousands or millions. There is no need to cite that stupid theory.

>>6085426
>Bordeing the thousands or millions
Fucking really? What are they made of?

How big are they?

>>6085428
They are made of everything. Metals, oxides, rocks and ice of all sorts. Their size varies from meters to whole miles acrross (Pluto and other dwarf planets). To get an idea Eros, a nearby asteroid, has more metal than we ever mined in our whole history close to the surface and it's just some kms across...

>>6085435
>To get an idea Eros, a nearby asteroid, has more metal than we ever mined in our whole history close to the surface and it's just some kms across...

Why can't we mine this shit and bring it back to earth?

Why won't liberals let us mine astroids?

>>6085428

So guys, when Gliese 710 invades our Oort Cloud and sends a fury of Comets into the inner-Solar orbits, which Bug infested planet are we going to invade?

>>6085439
>Why won't liberals let us mine astroids?
Because liberals are the modern catholic church and that's where all their authoritarian ideas come from.

I love this pic, it reminds me of Lunch atop a Skyscraper

>>6085446
>http://en.wikipedia.org/wiki/Gliese_710
>They estimate that the closest approach will happen in 1,360,000 years
By that time I'm pretty sure some small comets wont be much of a problem, on the other hand humanity could have already ceased to exist

>>6085439
>>6085456
Can we get back to posting pretty pictures and leave /pol/ out of it?
>The ISS and an eclipse

>>6085471
le pac man face

I wonder if the Centauris getting closer will cause more disturbing Comet trajectories.

Rover tracks on the Moon. Take THAT, conspiracy theorists!

>>6085478
pacmans face is pointy, not rounded on the inside like that, douchebag

I wonder if I live long enough to get to space and experience the zero gravity.

"That's one small step for [a] man, one giant leap for mankind."

>You will never bang hot space babes

>>6085487

No, but you'll live long enough to have your sperm interrogated, to see if it's worth to put into our female overlords. So they can enjoy space faring travel.

>>6082325

Amazingly, Saturn's moon Titan appears to have two atmospheres! What is causing this divide isn't yet understood.

>>6085510

Nothing has two atmospheres.
One part of the atmosphere is just denser than the other part.

Venus in transit. Notice the light seeping through the thick Venetian atmosphere.

>>6085510
Jesus christ. I don't know if you are trolling or not.

>>6085511
>>6085514
From NASA's astronomy picture of the Day
http://www.astronet.ru/db/xware/msg/1198962

The haze isn't exactly an atmosphere, but it is still a very strange anomaly to see such a large divide between the layers.

>>6085512

Venus in Transit of Jupiter. This will help put it into perspective about how fucking big Jupiter is, and then look back at the quoted post. That's how big the fucking Sun is.

>>6085518
It's a moon full of Hidrocarbs... That's just probably something derived from then that does not mix with normal air. Gasoline or something

There are deposits of water ice on Mercury

>>6085525
No way. Venus is almost the same size of earth. And only the Red dot on jupiter is much bigger than earth.

>>6085533

Do you know what angular size is?

>>6085536
Ok, even if your picture intended to show angular size, it's still wrong. At closest approach Venus is 64 arc seconds in diameter, Jupiter is 50 arc seconds. Venus has a larger angular size.

>>6085528
remember back to high school chemistry. Gases and aerosols form homogenous mixtures that evenly fill their container. Something is containing the the haze on Titan.

>>6085544

Okay know it all, just take a note at the huge variations between angular sizes. During the transit, the angular size of Venus was smaller than the Angular size of Jupiter. Enjoy.

>>6085557

#Told

>>6085556
Yeah. And it's called gravity. In such large scales and in the absense of a container gases form layers.

Phobos and Deimos captured by the Curiosity rover

>>6085576
If that were the case then we would see a double haze on every planetary atmosphere we look at.

An analema showing the movement of the Sun through the sky over the course of a year.

Dubai from the International Space Station

The Zodiacal Light, also called a False Dawn, caused by sunlight reflecting off dust particles in space

>>6085557

>>6085613
Gegenschein, similar to zodiacal lights, is caused by sunlight reflecting off dust particles in the solar system, but unlike zodiacal light, gegenschein is at the anti-solar position, the point on the opposite side of the sky as the Sun.

I have never seen Venus go through a crescent phase, but sources tell me otherwise. Anyway, here is what its plot in 2010.

>>6085589
>ozon layer
>comparing a hidrocarb atmosphere with o2 and n2

>>6085669
>>6085669
isn't venus a little "big" on 28/9?

Also, I've seen the crescent of venus in a telescope. Still bright as fuck, even as a sliver.

This thread is absolutely beautiful. I'm so glad to see a 100+ reply thread that isn't blatant trolling.

This view in particular >>6085458 is just astounding. A human being experienced that with all of their senses. And we're on the brink of privatized space travel and colonization. WE could experience this for ourselves.

Jesus. Fucking. Christ. It's fucking amazing.

Don't know what it is but i like it

>>6083684
sit down, little boy. Back in the day, mankind actually knew how to rocket.

Excuse my ignorance but, why do we see no stars when getting away from earth in film? I thought it was the light from the planet taking ''full attention'' of the lens but that far away and still no stars? whats up?

>>6086040
That's a red supergiant variable star in the constellation Monoceros, the Unicorn. The clouds surrounding it were thrown off by the star as it begins to enter the last phase of its life as a white dwarf.

>>6086091
I'm not sure where you heard that, but it's not because the planet has the "full attention" of the lens. Earth's atmosphere reflects a lot of light, so much light that at close distances (yes, OP's gif is a close distance, even at the farthest distance of the gif) the camera has to take short exposure shots to resolve it. Stars would only become visible with longer exposures, but so much light from the Earth would destroy the camera.

MESSENGER appears to be closer to the Earth in that gif than the Moon is. There's no stars in that gif for the same reason there are none in this pic from Apollo 8.

>>6086058
>1970s penis envy

>>6086100
But a human would see stars from that distance?

>>6086140
I'm not sure actually, but I don't think so. Neil Armstrong was quoted saying that he couldn't see stars from the lunar surface without optics equipment (of course, they landed on the *day* side of the Moon). An astronaut on the ISS can see stars if he looks out a window opposite the Earth, but can't see them when looking towards the Earth. Cameras were built to mimic the human eye (sort of). The pupil in the eye constricts when there is a lot of light to keep from burning the retinas (and there is a LOT of light reflected off the Earth), so it's unlikely a human observer would see stars when looking towards the planet at that distance as well.

>>6086040
>>6086094
Isn't that the remnant of the nova Tycho Brahe observed in the 16th century?

>>6086206
You're thinking of this nebula in Cassiopeia. That other one was discovered in the early 2000s when it suddenly increased in brightness.

>>6079870
Yeah, love seeing this in the summer on my early morning bike rides and as the sun begins to rise. I remember Summer 2012 when Venus and Jupiter and the Moon were around it as well. Was pretty amazing.

>>6086340
funny that you mention that, I actually have a picture of that conjunction.

>>6086443
So all 4 gas giants have rings? huh.

Proto-planetary discs in the Orion nebula. These are solar systems in the making.

The Moons and Jupiter

venus without a doubt, fuck mars

>>6087134
agreed. Fuck Mars and all the people who think we should terraform a rock that doesn't have enough gravity to safely colonize. Low gravity is dangerous for reproduction. Terraform Venus!

>>6087216
what about the back problems? (scoliosis?)

>>6087216
>terraform venus
How would we, then? The whole planet is what I imagine hell would be like if it existed. Obscene surface temperatures(relative to humans that is), a toxic atmosphere, rampant volcanism, extreme pressure on the surface, and so dense an atmosphere that a light gust of wind could knock you on your feet

>>6087225
Back problems from low gravity? yes there are those too. Venus' gravity is very near our own, so it is the best choice to be terraformed for long term human colonization.
>>6087266
>How would we?
Idk, that's what research is for. I imagine the way to start would be to use low orbit satellites to remove harmful gasses in the atmosphere. Studying how to adjust the atmosphere on Venus would help us learn how to prevent our own planet from having a runaway greenhouse effect too. The knowledge gained would also be useful to mine the atmosphere of Jupiter for a cheap source of hydrogen fuel.

>>6087433
Venus and the Pleiades star cluster

>>6087433
the problem is the amount of gas those satellites would need to be able to remove and hold. Obscene amounts.

>>6087465
Inflatable storage units in orbit are still cheaper and easier than trying to artificially boost the martian magnetosphere so it can hold onto an atmosphere 3x thinner than humans are used to.

>>6087473
If the mars was given a magnetosphere It could likely hold onto a much larger atmosphere than it currently does. And its not like a magnetosphere is a concern for mars terraforming. It lost its atmosphere over ages, not days. Its gravity could hold onto an atmosphere much larger than what it holds now after having it stripped away, and making it hold on for the LONG term is something the martians will have plenty of incentive for

>>6081792

Dances with Smurfs was set in the Alpha Centauri system, not our Solar System. I don't know why I know that.

>>6084456
>>6084461

To be fair Venus is a toxic shithole so even full real color images probably wouldn't be too spectacular. Still fascinating though.

>>6087490
Even with a magnetosphere its low gravity cannot hold on to the same density atmosphere as Earth's. Also, studies have shown that low gravity causes very serious, long term effects on fetuses and infants such as skeletal issues, early onset Alzheimer's, and a list of developmental disorders. Mars is a very poor choice for long term settlement. Since Venus much is closer to Earth gravity, the problems will be much less sever and much less frequent. Venus is the right choice for terraforming.

>>6087514
Yes, but would the density essentially be liveable? Also, were those studies on low gravity or microgravity?
I think the issue boils down to the ease of actually terraforming the place with current technology, even though one of them might be more hospitable once terraformed.
Another question, how long did it take, after bacteria were likely to have first developed and thrived, for macroscopic life to evolve on earth?

>>6086469

Neptune has rings?

>>6087525
>were those studies on low gravity or microgravity?
Both. University of Montreal did a study on plants in simulated low gravity on Earth using centrifuges, and several animal studies have been conducted on the ISS.

As far as the ease of terraforming goes, it is far, far easier to remove gasses from an atmosphere with current tech than to simulate a magnetosphere.
>how long did it take, after bacteria were likely to have first developed and thrived, for macroscopic life to evolve on earth?
simple cells appeared about 3.6b years ago, cellular photosynthesis about 3.4b years ago, and multicellular about 1b years ago. But that's not really relevant to a terraformed planet since we wouldn't rely on natural selection. Any creatures we put on the planet would be artificial selection.

>>6087531
yup. Here's a pic of Neptune's rings from Voyager 2

>>6087531
>>6087560

>>6087549
>than to simulate a magnetosphere.
Martian terraforming wouldnt worry about this. Not for a long, long while.
And anyways. I was curious thinking about the possibility seeing as how venus and mars are the only two planets within sols habitable zone besides earth, terraforming both but only exporting small simple cells to one and letting things develop.

>>6087576
we probably won't be around to see the results.

>>6087583
I know that, but it could still possibly be worth doing.

Solstice Sunset at Stonehenge (say that 3x fast)

>>6087999
The ISS over Moscow at night

>>6088002
ISS over New England

This past friday there was a rare triple-transit of Jupiter. Three moons all casting their shadows on the gas giant at the same time. That's Io above Europa on the left and Callisto far to the right.

>>6088011
another pic, this one a little clearer

>>6085488
http://www.firstmenonthemoon.com/

>>6086058
according to http://aviationweek.typepad.com/space/2007/03/human_space_exp.html the Saturn program, if continued, could have provided six manned launches per year — two of them to the moon — at the same cost as the Shuttle program

>>6087560
>>6087563

Nice. Did not know that. I was amazed back when I learned Uranus has rings but I still didn't know Neptune had them.

Earth in the Martian sky.

Don't let it die!
>Jupiter's moon Callisto in true color

>>6088930
callisto is a fantastic name. The best of the jovian moons.

>>6085435
So according to this Pluto does dip into the Kuiper belt.. You know I always wondered. Can a probe heading out of the solar system simply just go under it and avoid the belt altogether?

>>6088965
sure, KPOs mostly lie along the ecliptic plane, but there's really no need. The asteroids have a lot of space in between them, it's very unlikely a craft would hit one.

>>6085182
all those holes
Isn't that a result of a massive gigantic asteroid shower that could of possibly brought life to earth?

>>6089018
nope

Why is it that we can sometimes see the dark side of the Moon like in this pic?

The answer is actually very simple. The Earth reflects a lot of sunlight. Some of that light bounces off the Moon and comes back to the Earth so we can see it. This is known as Earthshine.

the majestic eagle nebula, rejoice in it's creative power

>>6079862
that looks like it was rendered in POV-Ray in 1992.

no way this is real and not CGI. specular reflection gives it away.

>>6089047
It's definitely real. That reflection you see in the center is from the Sun itself.
Here's a mirror site for NASA's Astronomy Picture of the Day where the video source of that gif was posted
http://www.star.ucl.ac.uk/~apod/apod/ap130805.html

>>6089049
also, the video:
http://youtu.be/rFDjAfwmWKM

>>6089045
So, if you can see the colors of alot of nebula very well in true color, despite many images being inhanced to show infrared, and there are some nebula that can be seen even from earths surface with the naked eye, wouldnt they appear very brilliant close enough to see well?

>>6089054
they would if your vision weren't obstructed by light pollution

>>6089056
I wonder if, at night, at certain positions in a sufficiently well lit one, youd see a nebula from the dark side of a planet located in it. A real 'sci-fi shit' image.

>>6089059
maybe it's because I'm drunk, but I really don't understand what you said.

>>6089056
My OC made from this image.

'Let there be Orion!"

>>6089069
say you stand on the dark side of a planet
that planet is inside a nebula, and that nebula is bright enough to be seen with the naked eye from earth
would it 'color the sky' so to speak, to a degree?

>>6089075
yes, very much.

>>6089054
No. Even the brightest nebulae are dim and the type of cell in your eye that is good with dim things is also black and white. You need a telescope to see colour. Although images are "true colour" it does not mean the colour contrast and saturation are not greatly enhanced. It simply means RGB filters were used. Rarely will an astro image be what you would see.

>>6089056
You will never see an image like the left with the naked eye. The right is what you would see in a pretty dark site.

>>6089083
>The right is what you would see in a pretty dark site.
The right image was taken outside of New Orleans, Louisiana, the left image was taken in Big Bend National Park in Texas, the darkest public park in the United States. You can see Orion like that if you are at a true dark sky site.

The left image in this picture was taken when the power grid failed in upstate New York in 2003, the right was taken after the power was restored.

>>6089083
>No. Even the brightest nebulae are dim
There are ones that can be seen from earth with the naked eye though. As vague splotches, mind you, yes, but this is based of if theyre visible from earth, how must they appear more close up

>>6089087
No. I've been to incredibly dark sites but you will never see that. The nebula behind the horsehead nebula is mag 7.3, you simply won't see that. Certainly not as brightly and as clearly as that.

I have no doubt the images are comparable but you will not see that.

>>6089094
The horsehead nebula's apparent magnitude is 6.8, and yes, you can see it like that because I have also been to a dark sky site and have seen it like that myself.

>>6089098
>>6089094
Hmn. We seem to have reached an impasse.

>>6089098
The Horsehead nebula isn't mag 6.8 because it's dark. IC 434 (the nebula behind horsehead) is 7.2. I could maybe believe it could be seen as the slightest bright patch but not like that and not in colour. Never like it is in that image. I'm a strong believer that people see what they want to.

Mag 7 is the absolute limit, there is no way it could be seen like that.

>>6081726
you mean air pressure, but that's alright

>>6089051
In the future, link to the video instead of converting it to GIF. That GIF is over four times as large as the video and of lower quality.

>>6089347
I didn't make the gif of MESSENGER
>Orion nebula from a ground based 10" telescope

>>6087266
In one sci-fi book I read, they terraformed Venus starting with a gigantic sun-shade. This eventually cooled the atmosphere enough that the CO2 froze out. They then sequestered it under rock and soil, creating a surface and atmosphere reflective enough to stay cool once the sun shield was removed. Final touch was importing water comets from the outer system for oceans. The book was crazy though, had this all happening within 300 years, when it should take at least tens of thousands of years.

>>6086040
The clouds visible around it are a light echo from a flare of the central star. Over many years, that echo has highlighted different shells of the surrounding nebula. GIF related.

>>6085187
so. much. sulfur.

>>6089874
92 atm...jesus
introduce water
water -> carbonic acid
introduce extremophile
CO2-> chem energy + O2
reflector shield = no more Q in...
Q trickles out at frustratingly slow speeds.
atmosphere trickles out

>>6089961