Video: Final flight of Space Shuttle Endeavour

Millions glimpsed and photographed Space Shuttle Endeavour on September 21, as it made its final aerial spin over California.

Bright meteor or space debris broke up over UK on September 21

The meteor sightings came around 2200 UTC (5 p.m. CDT) on September 21, 2012. The meteor was traveling east to west over U.K. skies. Many saw it!

Earth in Mars’ sky

The Mars rover Spirit captured this image on March 8, 2004. It was the first image of our world taken from another planet beyond our Earth-moon system.

NGC 7090 is edge-on spiral galaxy, actively forming stars

Because we're looking at it edge-on, we can't see this galaxy's spiral arms. But we can see the flat disk of the galaxy and its bulging mid-section.

Astronomers find two planets orbiting stars in Beehive cluster

The planets in the Beehive are the first ever found around sun-like stars in a cluster of stars.

How and when did the first planets form in our universe?

At an estimated age of 12.8 billion years, the HIP 11952 exoplanet system is one of the oldest systems known so far.

How many killer asteroids are out there?

NASA survey suggests roughly 4,700 potentially hazardous asteroids. So far, an estimated 20 to 30 percent of these objects have been found.

Two asteroids to sweep past Earth September 13-14

This post gives links for seeing potentially hazardous asteroid 2012 QG42 with a telescope, or watching its passage online.

Astronomers see explosion in Jupiter’s cloudtops

It might have been a small undetected comet, perhaps similar to the fractured Comet Shoemaker-Levy 9, which was widely seen to strike Jupiter in 1994.

Dawn spacecraft left asteroid Vesta, now headed for Ceres

Dawn is now officially on its way to its second destination, the dwarf planet Ceres. This post also contains a video portrait of Vesta, by Dawn.