China visits moon!

China visits moon!
As scientists find new surprises in Apollo’s 40-year-old rock collection, gravity studies by an over-achieving satellite duo provide a fascinating X-ray vision as big as the moon itself. More »

Understanding the Russian asteroid

Understanding the Russian asteroid
The biggest asteroid to strike land in 105 years sheds light on where space rocks come from, how many more might hit us, and what we should do about them. Ready for a “cylindrical nuclear bomb”? More »

Comet explores sun!

Comet explores sun!

In 2011, a suicidal comet brushed the sun — showing a swirling magnetic field, the source of dangerous “space weather.” What did we learn from the sacrifice of comet Lovejoy? More »

Dunewatching, Martian style

Dunewatching, Martian style

New pix from Mars show sand dunes on the move. Mars has been dry for 1.5 billion years; could massive erosion be due to wind? Yes, says a new report that tracked dunes with precise new images. Surprise: dunes move as fast on Mars as on Earth! More »

Running out of space

Tommy and his spacedog point up to Spaceship One

With space shuttles in museums, the near-term American plan to return to space relies on other countries or private firms. What are the options? More »

Year of astronomy: More reasons to love stars!

Year of astronomy: More reasons to love stars!

400 years ago, Galileo discovered the moons of Jupiter. We discover water from 11 billion years ago, volcanoes at Titan, a moon of Saturn, and good reasons to shun light pollution. More »

What we did on our summer vacation: Visit Mars!

It’s a boom time for studying Mars, and the perfect time for the be-all, end-all summer vacation. Ride a robot rover. Dune-buggy an unearthly dune field. Even meet-and-greet a real live Martian! All aboard for Mars! More »

Super View of Supernova

After 20 years, star explosion reveals more secrets. What gives in these giant bangs?

Star-Burst Fills Empty Hole

Where did all the dust come from? If you are interested in the origin of planets and human beings, here’s evidence that a star explosion made mucho dust. More »

A Bar in the Galaxy! Milky Way’s secret spot

Think you know the Milky Way, our home galaxy? Think again. There’s a large bar at the center, and it’s open for business. It might even be feeding a black hole… Meet the newest galactic doo-dad… More »