Search found 10 matches
- Thu Dec 01, 2011 10:04 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Curiosity Rover Lifts Off for Mars (2011 Nov 30)
- Replies: 19
- Views: 3852
Re: APOD: Curiosity Rover Lifts Off for Mars (2011 Nov 30)
I'm curious about the towers surrounding the vehicle, that seem to be connected to each other by cable. What is their function(s) before and after the launch? This is the lightning protection system. 400 foot towers with fiberglass rods on top and wires between them ensure the rocket does not get s...
- Thu Dec 01, 2011 4:16 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Curiosity Rover Lifts Off for Mars (2011 Nov 30)
- Replies: 19
- Views: 3852
Re: APOD: Curiosity Rover Lifts Off for Mars (2011 Nov 30)
I'm curious about the towers surrounding the vehicle, that seem to be connected to each other by cable.
What is their function(s) before and after the launch?
What is their function(s) before and after the launch?
- Mon Sep 19, 2011 10:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The South Pole of Asteroid Vesta (2011 Sep 19)
- Replies: 23
- Views: 4246
Re: APOD: The South Pole of Asteroid Vesta (2011 Sep 19)
How are the north and south poles determined on asteroids?
- Mon Aug 01, 2011 7:26 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Shuttle Reentry Streak from Orbit (2011 Aug 01)
- Replies: 34
- Views: 7215
Re: APOD: Shuttle Reentry Streak from Orbit (2011 Aug 01)
What are the background lights on Earth, city lights or lightning strikes?
If they're city lights, any idea of which cities they are?
If they're city lights, any idea of which cities they are?
- Sat Feb 05, 2011 8:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Apollo 14: A View from Antares (2011 Feb 05)
- Replies: 34
- Views: 6482
Re: APOD: Apollo 14: A View from Antares (2011 Feb 05)
What are the objects near the horizon about 2 cross-hairs from the left? One appears to be covered in a gold colored foil...
- Tue Nov 16, 2010 11:11 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
- Replies: 39
- Views: 6935
Re: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
Keep in mind that redshift is not caused by the Doppler effect. It occurs because the space through which the light is traveling has expanded between the time the photon was emitted, and the time it is observed. That stretching of space increases the wavelength of the light. Looks like I've learned...
- Tue Nov 16, 2010 9:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
- Replies: 39
- Views: 6935
Re: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
The expansion of the Universe as we recognize it is, in fact, an observable phenomenon, so I don't see why we wouldn't observe it locally if it were occurring. OK, makes sense, but in my naive thinking, I would think the small scale of our slice of the pie, would make the measurements impossible wi...
- Tue Nov 16, 2010 9:05 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
- Replies: 39
- Views: 6935
Re: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
This is probably a stupid rookie question, but I have to wonder how galaxies manage to collide, when the universe is expanding? Were they propelled in different directions, allowing this interaction, prior to the time they were formed, as the hydrogen atoms were drawn together? It's a rookie questi...
- Tue Nov 16, 2010 7:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
- Replies: 39
- Views: 6935
Re: APOD: Atoms for Peace Galaxy Collision (2010 Nov 16)
This is probably a stupid rookie question, but I have to wonder how galaxies manage to collide, when the universe is expanding? Were they propelled in different directions, allowing this interaction, prior to the time they were formed, as the hydrogen atoms were drawn together?
- Thu Sep 30, 2010 1:06 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: An Airplane in Front of the Moon (2010 Sep 29)
- Replies: 112
- Views: 24350
Re: APOD: An Airplane in Front of the Moon (2010 Sep 29)
Judging from the size of the Moon, the photograph was taken with a fairly powerful telephoto lens. For the plane to appear to be approximately the same size as the Moon, it would have to be quite a distance from the camera, therefore not flying slow enough for a take off or landing situation. Now, I...