Search found 2 matches
- Tue Aug 05, 2014 4:50 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Four Billion BCE: Battered Earth (2014 Aug 05)
- Replies: 37
- Views: 43262
Re: APOD: Four Billion BCE: Battered Earth (2014 Aug 05)
Since the iron in the oceans hasn't been oxidized yet, shouldn't they be some shade of green?
- Mon Nov 25, 2013 5:49 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Anemic Spiral NGC 4921 from Hubble (2013 Nov 25)
- Replies: 50
- Views: 5126
Re: APOD: Anemic Spiral NGC 4921 from Hubble (2013 Nov 25)
I'm curious about the largish spiral in the upper left corner. If there's no Milky Way star with a chance alignment, it must have a very bright nucleus given the diffraction spikes at its center.