Search found 6 matches
- Wed Oct 25, 2017 9:31 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Marius Hills and a Hole in the Moon (2017 Oct 25)
- Replies: 21
- Views: 16590
Re: APOD: Marius Hills and a Hole in the Moon (2017 Oct 25)
See the Heinlein story The Menace from Earth. He reckoned that people living in a cave on the Moon would be able to strap on wings and fly.
- Mon Sep 25, 2017 12:26 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: How to Identify that Light in the Sky (2017 Sep 24)
- Replies: 33
- Views: 15463
Re: APOD: How to Identify that Light in the Sky (2017 Sep 24)
Or one of the Magellanic Clouds, for those further south.Lukas Stratmann wrote:Fuzzy without tail: probably the Andromeda galaxy?
- Sat Apr 08, 2017 11:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Zeta Oph: Runaway Star (2017 Apr 08)
- Replies: 36
- Views: 7056
Re: APOD: Zeta Oph: Runaway Star (2017 Apr 08)
It is incorrect to say that Zeta Oph was "flung out" of its binary system when its companion exploded. It simply continued at the same speed it had in orbit, in the direction it was going when the supernova blew past it. This is just Newton's First Law: An object in motion tends to remain ...
- Sat Oct 03, 2015 4:41 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Blue Blood Moon (2015 Oct 03)
- Replies: 13
- Views: 2996
Re: APOD: A Blue Blood Moon (2015 Oct 03)
Do we have any photos from a lunar orbiter showing the Earth during a lunar eclipse? They should show the lower atmosphere red and the upper atmosphere blue, as described here.
- Mon Sep 30, 2013 3:07 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mysterious Green Patches on the Sky (2013 Sep 30)
- Replies: 275
- Views: 523591
Re: APOD: Mysterious Green Patches on the Sky (2013 Sep 30)
Ah, collective intelligence, the dream of Doug Engelbart, who invented most of modern computing. In his honor, One Laptop Per Child teaches astronomy and everything else to millions of children, and enables them to collaborate to solve the problems of the world. http://www.youtube.com/watch?v=yJDv-z...
- Sun Nov 04, 2012 2:46 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Lenticular Clouds Over Washington (2012 Nov 04)
- Replies: 30
- Views: 5364