Atmospheric Phenomena

Aurora over northern Norway

An Amazing Aurora Video

Night after freezing night, Norwegian photographer Ole Salomonsen gathered aurora photos — 50,000 in all — to produce a breathtaking video that reveals the northern lights' true splendor.

Aurigid meteors

Aurigids Aplenty!

Just as predicted, the Aurigid shower delivered a burst of meteors created by particles shed by a comet more than 2,000 years ago.

What is a sundog, and how did “sundogs” get their name?

Why are "sundogs" called by that name? Before answering the why question, let me answer a what question, namely, What is a sundog, or mock Sun, in the first place? It’s a concentrated patch of sunlight occasionally seen about 22° to the left or right of the Sun. Sundogs form, often in pairs on...

2008 Leonid meteors

Will the Leonids Roar Again?

Anyone who remembers the spectacular displays of Leonid meteors in 1999–2002 would surely love to see them again. Good news! Theorists predict that the Leonids might be back for a modest encore in mid-November 2009.