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Last night’s moon with Venus
People around the world saw the moon and Venus last night. They'll be even closer tonight!
December 5, 2013
Crescent moon with earthshine
The young moon is back after sunset, passing near Venus in the next few evenings. The pale glow on the darkened portion of the moon is called "earthshine."
December 4, 2013
Sunrise, morning haze, Grand Canyon
Nearly two billion years of geologic history can be seen in the canyon, exposed by flowing water and the uplift of the Colorado Plateau.
December 3, 2013
Cas A seen in X-rays
Cassiopeia A - Cas A, for short - is the debris field left behind after a massive star exploded.
December 1, 2013
Comet ISON, post-perihelion
Has a remnant of Comet ISON survived the close brush with the sun?
November 28, 2013
Comet ISON on November 28
The field of view of the SOHO mission's LASCO C3 now fully shows Comet ISON.
November 28, 2013
This is not Comet ISON, but it could be
There are rumors today that Comet ISON is breaking up as it nears its November 28 closest point to the sun. Here's what a disintegrating comet looks like.
November 26, 2013
Comet ISON nears the sun
Comet ISON is now inside the orbit of Mercury. It's on the last leg of its journey sunward, a journey that began at least a million years ago.
November 23, 2013
