View Full Version : The Secret to Earth's Shining Auroras

2006-Aug-25, 03:45 PM
Auroras appear near to the poles when material from the Sun interacts with the Earth's magnetic field. Now ESA's Cluster spacecraft have helped determine exactly how energetic particles are generated that cause the atmosphere to glow so brightly. Cluster has confirmed that the interactions with the Earth's magnetosphere cause flows of gas traveling more than 300 km/second (186 miles/second) to crash into the atmosphere, generating the light show we see.

Read the full blog entry (http://www.universetoday.com/2006/08/25/the-secret-to-earths-shining-auroras/)

2006-Aug-26, 10:24 PM
Looking through the aurora, it's nice to know we can see green stars. ;)

2006-Aug-27, 12:56 PM
George, I fully agree.
It is amazing to see that the photo shows the sunlit Earth, auroras, and stars all at the same time.:think:

2006-Aug-28, 01:54 AM
I thought we already had this sussed?

Electrified gas(???) crashing(??) into the atmosphere...Mmmmm why does that sound familer?