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Sun’s magnetic field about to flip
This reversal happens every 11 years and is tied to the sun's cycle of activity, now near its peak. The effects of the reversal will ripple throughout the solar system.
November 11, 2013
View from space: The sun flares up
The sun emitted a significant solar flare that peaked at 1:14 a.m. EST on Nov. 10, 2013.
November 11, 2013
NASA’s Hubble sees asteroid spout six comet-like tails
Comets are icy and sometimes have tails. Asteroids are rocky or metallic and typically don't have tails. But this asteroid has six tails and rotates like a lawn sprinkler.
November 10, 2013
Best photos of Comet Lovejoy near Beehive star cluster
Comet Lovejoy has been visible with binoculars in the predawn sky, near the famous Beehive star cluster. How to spot it, plus best photos, here.
November 7, 2013
Telescope finds new hunting ground for black holes
When a team of astronomers discovered two black holes in a collection of stars known as a globular cluster, they weren't sure if the black holes’ presence was a common occurrence or a unique stroke of luck.
November 7, 2013
Great photos: Moon and Venus on November 6, 2013
Some wonderful images of last night's moon and Venus, as seen from around the world. Thanks to all who posted on EarthSky's Facebook page!
November 7, 2013
From one collapsing star, two black holes form and fuse
"Nobody has ever predicted that a single collapsing star could produce a pair of black holes that then merge." - Christian Reisswig
November 6, 2013
Galaxies near and far: Milky Way and Andromeda
Central starry pathway is the Milky Way, our home galaxy. The Andromeda galaxy is an elongated fuzzy patch, just right of center.
November 6, 2013
Check out this Comet ISON interactive model
Comet ISON interactive model visualizes comet's current position, trajectory, and important moments as Comet ISON hurtles toward its encounter with the sun.
November 5, 2013
