Search found 29 matches
- Thu Jan 01, 2009 9:05 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Galileo or Huygens? IYA (2009 Jan 01)
- Replies: 5
- Views: 1926
Galileo or Huygens? IYA (2009 Jan 01)
It says in the text accompanying the first APOD of 2009 that "Galileo discovered that [...] Saturn has rings." But wasn't it rather Christian Huygens who first correctly interpreted what to Galileo had remained a mystery? I quote from the ESA website: "Although he saw the rings first,...
- Mon Jul 09, 2007 8:27 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Night-Shining Clouds (2007 Jul 05)
- Replies: 38
- Views: 16756
night shining clouds
yes, now i have a clear picture. when they are called "night shining clouds", that is a bit of a misnomer, because they are just as "night-shining" as for instance the moon - they receive their light from the sun, but because they are so very high up in the atmosphere, they can b...
- Fri Jul 06, 2007 10:17 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Night-Shining Clouds (2007 Jul 05)
- Replies: 38
- Views: 16756
day shining clouds
i don't want to put too fine a point on it, and i take it that the guys and ladies at nasa know what they are doing, but the whole area north of 70° (which includes the larger part of greenland and the whole island of nova zembla, directly under the clouds) was bathed in continuous sunshine during t...
- Thu Jul 05, 2007 12:39 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Night-Shining Clouds (2007 Jul 05)
- Replies: 38
- Views: 16756
nightshining clouds
can anybody tell me how they can take a picture of a night sky over the north pole on june 11 when the sun does not set over the north pole until 25 september?