Search found 3 matches
- Thu Aug 26, 2004 11:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Green ring: Wavefront or debris feild? (8-26-04 APOD)
- Replies: 0
- Views: 24486
Green ring: Wavefront or debris feild? (8-26-04 APOD)
In the explanation for the August 26 APOD, the false-color green ring is estimated to be 10 light-years in diameter. Also, it states that light from the explosion first reached Earth just over 300 years ago. If the green ring represents the wavefront from the explosion, it must be moving very quickl...
- Thu Aug 26, 2004 10:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Orientation of planetary surfaces...
- Replies: 3
- Views: 34733
- Wed Aug 25, 2004 7:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Backward Brain?
- Replies: 3
- Views: 20856
Backward Brain?
Whenever I first look at a high quality photo of a cratered surface, or actually any photo of a surface with high relief and a low angle for the illumination (such as http://antwrp.gsfc.nasa.gov/apod/ap020627.html), my brain initially processes the image in reverse. That means that craters look like...