... The track of totality for the first solar eclipse of 2006 began early yesterday on the east coast of Brazil and ended half a world away at sunset in western Mongolia. ... Green and Black Auroras Over Norway . ... These unusual gaps can make Research using data from four Cluster spacecraft orbiting the Earth has likely found the secret: auroral gaps, sometimes knows as black auroras, are actually anti-auroras. ... Animation of Asteroids Passing Near Earth . ... Moonquakes Surprisingly Common . ...