Strong to severe geomagnetic storm in progress. Aurora alert!

A geomagnetic storm is in progress. If it's nighttime, and you're at a high latitude, go outside and look for auroras! And quit worrying, you. Just enjoy.

UARS satellite reenters atmosphere over Pacific Ocean

UARS penetrated the atmosphere over the Pacific. No debris has been found. There are no reports of injury or property damage. Hoax videos are circulating.

The growing problem of space debris

The September 24, 2011 uncontrolled reentry of NASA's UARS satellite places a spotlight the problem of debris in orbit around Earth.

International Space Station has three new crew

All of launch dates are tentative, but are a welcome step after concerns that launches would cease due to an unmanned Soyuz crash over Siberia on August 24.

New planets may have been found by citizen scientist web users

Looking at data from the Kepler mission, web users participating in the Planet Hunters science project may have found two new planets.

Cassini captures five of Saturn’s moons

Five of Saturn's moons appear in one image taken by the Cassini spacecraft in 2011.

Fifth gas giant planet in early solar system?

Our solar system might've once had five gas giant planets. The fifth might have gotten the boot after a close encounter with Jupiter, 3.9 billion years ago.

Running Chicken Nebula image in ruby red

An image from the European Southern Observatory shows the Running Chicken Nebula, a star-forming region in space, 6,500 light-years away.

Dinosaur-killing asteroid origin remains a mystery

NASA's WISE mission rules out the Baptistina family of asteroids in the search for which ones were the dinosaur-killing asteroid.

Earth eclipsed the sun yesterday

See an eclipse yesterday (September 19, 2011) when the Earth eclipsed the sun. SDO has eclipse seasons twice a year.