/sci/ - Science & Math

>>7601456
Missed this the first time:

"While interstellar medium features are not typically related to indicators of astrophysically interesting >happenings
in stars, we note the presence of stellar and interstellar Na D lines in our spectra. In the bottom panel of Figure 5, we show a close up of the region containing the Na D lines (5890;5896̊ A). Within the two broad stellar features, there are two very deep and narrow Na D lines with split line profiles, indicating the presence of two discrete ISM clouds with different velocities of 20 km s-1."

There are two interstellar medium clouds between us and Ai-chan and they contain the sodium doublet.

And I looked again, and the spectra were only taken on four days, not during the occlusion activity. So we actually don't know whether the occlusion was accompanied by a change in visible color.

The Milky Way is full of gaseous weirdness from all those supernovae over all those epochs. pic related. Some unusual molecular cloud has to be more likely than robotic space dragonflies, doesn't it?