Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
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
Moon, Jupiter, Orion last night
People around the world last night saw Jupiter near the moon. One sky ...
November 22, 2013
New evidence for jet from Milky Way’s black hole
The evidence comes in the form of high-energy particles blasting out of the supermassive black hole at the center of our galaxy.
November 21, 2013
Hubble eXtreme Deep Field
Except for a few bright stars, every speck of light in this image is an entire galaxy.
November 20, 2013
