Search found 6 matches

by Mokurai
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: 15797

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.
by Mokurai
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: 14390

Re: APOD: How to Identify that Light in the Sky (2017 Sep 24)

Lukas Stratmann wrote:Fuzzy without tail: probably the Andromeda galaxy?
Or one of the Magellanic Clouds, for those further south.
by Mokurai
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: 5983

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 ...
by Mokurai
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: 2643

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.
by Mokurai
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: 509735

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...