Astronomy thread

[GiaCat]

This is an interesting video. Mars in 4K. I particularly like the view form Mars to Earth.

https://www.youtube.com/watch?v=NXbCNAIIAxw

 

[Hypoxia]

Some people collect theme parks or roller-coasters or zoos. We collect observatories. We have been intimate with significant refractors and reflectors. I have climbed radio-telescope dishes and been run over by a Martian rover. We have built our own. The universe is out there, folks. Suck it up.