Aurora (astronomy)

The aurora is a glow observed in the night sky, usually in the polar zone.

See also:

It is also known as "northern lights" or "aurora borealis," which is Latin for "northern dawn" since in Europe especially, it often appears as a reddish glow on the northern horizon as if the sun were rising from an unusual direction.

For more information about the topic Aurora (astronomy), read the full article at Wikipedia.org, or see the following related articles:

Solar flare — A solar flare is a violent explosion in the Sun's atmosphere with an energy equivalent to tens of millions of hydrogen bombs. Solar flares take place ... > read more

Magnetosphere — A magnetosphere is the region around an astronomical object in which phenomena are dominated or organized by its magnetic field. Earth is surrounded ... > read more

Van Allen radiation belt — The Van Allen radiation belt is a torus of energetic charged particles (i.e. a plasma) around Earth, trapped by Earth's magnetic field. When the ... > read more

Solar radiation — Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy. About half of the radiation is in the visible short-wave ... > read more

Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Aurora (astronomy) at Wikipedia.org. See the Wikipedia copyright page for more details.

Recommend this page on Facebook, Twitter,
and Google +1:

Other bookmarking and sharing tools:

| More