Search found 502 matches
- Mon Aug 29, 2005 2:27 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Origin of the "big bang" ??
- Replies: 7
- Views: 3853
- Wed Aug 17, 2005 2:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Water on mars
- Replies: 24
- Views: 11918
There was a program about Venus (NOVA?) and scientists trying to solve the many unanswered questions about the veiled planet. It's assumed that the reason Venus has such a dense atmosphere is that it is being replenished by volcanoes...but so far there isn't any direct evidence of volcanic activity,...
- Sun Aug 14, 2005 8:17 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: (Aug 9 APOD) Moon ?
- Replies: 8
- Views: 4474
- Sun Jul 31, 2005 10:27 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The object larger than Pluto (July 31)
- Replies: 31
- Views: 14688
Ah, I hadn't read; you were talking about this. You should post a link w/ info on the subject you start. 8)
- Sun Jul 31, 2005 9:41 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The object larger than Pluto (July 31)
- Replies: 31
- Views: 14688
It may be possible, but there are many ice/rock object orbiting the sun in the outer reaches of the solar system. There was a discussion a while back about whether Pluto should actually be called a planet; such objects were talked about in more detail.
Pluto has one satellite, called Charon.
Pluto has one satellite, called Charon.
- Fri Jul 29, 2005 4:31 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Spherical Planetary Nebula Abell 39 (2005 Jul 28)
- Replies: 13
- Views: 82536
- Fri Jul 29, 2005 4:26 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Spherical Planetary Nebula Abell 39 (2005 Jul 28)
- Replies: 13
- Views: 82536
Saving makc the trouble:
- Fri Jul 29, 2005 4:14 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Hyperion
- Replies: 5
- Views: 4516
- Wed Jul 27, 2005 4:11 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Hyperion
- Replies: 5
- Views: 4516
- Wed Jul 27, 2005 4:02 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Moderatorship or Censorship?
- Replies: 30
- Views: 12825
- Fri Jul 15, 2005 10:14 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Star Trails Over Vienna - 7/14/05
- Replies: 5
- Views: 5799
- Fri Jul 15, 2005 10:11 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Star Trails Over Vienna - 7/14/05
- Replies: 5
- Views: 5799
- Tue Jul 12, 2005 12:27 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: On the edge
- Replies: 1
- Views: 2585
- Wed Jun 29, 2005 2:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD 20050628 - "false colour"
- Replies: 3
- Views: 3894
- Mon Jun 20, 2005 3:11 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Blue or red sky
- Replies: 5
- Views: 3885
http://antwrp.gsfc.nasa.gov/apod/image/0506/marssunset_spirit_big.jpg Pretty strange indeed. The only explanation they give is that the filters they used bring out the blue color: This small panorama of the western sky was obtained using Pancam's 750-nanometer, 530-nanometer and 430-nanometer color...
- Mon Jun 20, 2005 2:46 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD 2005 05 16
- Replies: 2
- Views: 2927
imagine liquid comet. there would be no crater at all. I guess it is about how much of impact energy can be consumed for plastic deformation - if none, it would have to crack, leaving large crater. That sounds about right to me. How about a brick dropped into a box of polystyrene packing peanuts? T...
- Mon May 09, 2005 10:38 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Poll on APOD?
- Replies: 7
- Views: 5692
that's the great part of APOD, it shows all of those. Agreed. I don't think I can really choose one subject over any other. I think APOD has always had a good mix of beauty and science. Both are important. IMO: on one hand, our lives are enriched by the deepening of total human knowlege. But at the...
- Mon May 09, 2005 10:30 am
- Forum: The Observation Deck: Latest Sky Photography
- Topic: MilkyWay from Gran Canaria (Canary Islands)
- Replies: 2
- Views: 4494
- Fri May 06, 2005 10:33 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Poll on APOD?
- Replies: 7
- Views: 5692
- Tue May 03, 2005 10:31 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Tire tracks on Mars?
- Replies: 3
- Views: 4336
- Tue Apr 12, 2005 10:41 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Sideways Galaxy NGC 3628
- Replies: 2
- Views: 3778
http://antwrp.gsfc.nasa.gov/apod/image/0504/ngc3628_croman_c45.jpg You'd have to know the distance of the smudge and compare it to the distance the galaxy. Without knowing that, the object could be a small satelite galaxy, like our Magellanic Clouds, or a large galaxy hundreds of thousands of light...
- Tue Apr 05, 2005 4:08 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: What makes nebulae red?
- Replies: 6
- Views: 9448
- Tue Mar 29, 2005 4:58 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Einstein's Cross/APOD 05/03/27
- Replies: 7
- Views: 6184
- Wed Mar 16, 2005 1:06 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: the message
- Replies: 5
- Views: 4616
- Mon Mar 14, 2005 8:34 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: What makes nebulae red?
- Replies: 6
- Views: 9448
You can break down nebulae into two groups: emission and reflection . The Trifid Nebula (M20) contains examples of both. http://antwrp.gsfc.nasa.gov/apod/image/0204/trifid_aao.jpg The reddish-pink color signifies an emission nebula. The cloud is largely made of H2. When ultraviolet light from nearby...