robotslendahand
robotslendahand t1_jalas7h wrote
When we see Andromeda with the naked eye we're just seeing it's bright nucleus. That's why it looks like a a star. If it were fully visible it would look like this. We could see it and it would be big and cool. But, unfortunately, things in space are actually very dim and if we were in a more densely packed corner of the universe we'd have the same problem most of the time. Even the Milky Way, which is huge and we live inside of, is only visible in dark areas away from cities.
In the Southern Hemisphere you can see with the unaided eye the Milky Way's satellite galaxies, the Small & Large Megellanic Clouds.
robotslendahand t1_j28gfsa wrote
Reply to Documentaries on Columbia shuttle? by Worthy_Planet375
PBS's NOVA did an episode about it.
If you want something in-depth NASA's Columbia Crew Survival Investigation Report pdf gets deep into the sequence of events. Redacted in some crew-related sections btw.
robotslendahand t1_j1pcsr2 wrote
The best visualization of the reasons is the browser game SuperPlanetCrash. Choose a body of a certain mass, plop it down in an orbit of your choosing, and see what happens.
robotslendahand t1_iufduox wrote
Reply to When the last star dies by trunktunk
Wikipedia's The Timeline of the Far Future goes there.
robotslendahand t1_itxsgo6 wrote
Reply to Unpublished Photos From the Apollo Moon Landing Are Heading to Auction by Pure_Candidate_3831
The Project Apollo Archive on Flickr has all the Apollo photos from every roll categorized by mission starting with Apollo 7.
Also the excellent Apollo Image Archive has them categorized by type of camera used.
robotslendahand t1_jdi6p3m wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
For fun here's a gif of a timelapse of stars orbiting Sagittarius A*.