/sci/ - Science & Math

hi!
post your favourite stellar object or structure!

every object is welcome.
from nebulas over supernovae remnants to galaxy clusters.

NGC 2440
distance: 4000 ly

>>2035776
The Orion Platform, though innovative, carries certain risks, both environmental and political, that must be weighed against the utility of the platform.

For starters, the use of the Orion Platform as an Earth-launching platform is quite dangerous for the reasons I've listed previously.

As a space-only craft accelerant, it may prove useful. However, considering that each nuclear explosion of .15 kT yield would add only roughly 13m/s (30 mph) to the craft's velocity PER DETONATION, I call into question it's actual usefulness compared to liquid hydrogen rockets which provide constant force translating to constantly increasing velocity.

All in all, my first impression is that the Orion seems unnecessary compared to liquid hydrogen fuel, however I will not rule it out as a possibility as further research may prove it fills a critical niche I could not hope to imagine in the short time I've considered this propulsion mechanism.

>>1629469
Just one more thing, I visited George observatory recently and spoke with a self proclaimed 'asteroid hunter'. Someone who searches for new asteroids off the solar system's orbital. He said that to officially claim an asteroid, the object must be recorded and sighted on three different occasions on three different days. This being a stationary observatory I assume he does the parallax trick by taking measurements post sunrise and pre dusk (or as wide apart time-wise as possible). What models are used to take into account the asteroid's movement?

I was taken aback by this so I turned over to look at her. What I saw was her lovely pale face smiling at me and her body hidden by darkness. Then the thing planted it's twisted clawed hand next to me and leaned forward to reveal the rest of the horribly contorted body but what threw my mind into oblivion was that my dream girl's face was plastered onto this things head and it was peeling on one corner. That's when I began screaming. “GOD OH GOD NOT HER NOT HER NOT HER.” At this point in any regular nightmare a person would wake up, I didn't. I scrambled out of the bed and out the door into the hallway. I found the light switch and frantically flipped on off on off on off on off but to no avail. The thing had found its way out of my room and stuck it's new face around a bend and into the hallway so I was staring right at it. I caught my scream in my throat and sprinted down the stairs to try the front door. It was locked of course. My ancient dog waddled over and looked up to me. I patted her head as I looked up the stairs to the pale face staring down at me. When I glanced back to my dog she was standing on two legs and her shoulders had contorted into two large muscular masses. Somehow I was ok with this. My dog was looking through the peephole of the door. I nudged her over and looked out to see space. Literally space, stars and galaxies and nebulas of every color and hue were flying past me. I could feel the light blinding my eyes and the radiation burning my face. Then my dog started barking and I woke up.