Another Shocking Delay for NASA’s Next Big Telescope

If the James Webb Space Telescope wants to get off the ground, it will need a blessing—and more money—from Congress.

When a Mars Simulation Goes Wrong

A recent mission atop a Hawaiian volcano shows humans still have much to learn before they set foot on another world.

NASA Seeks Moon-Ready Technologies For Short-Notice Trip

The agency's prepping for a trip to the moon as soon as next year.

What Should We Do About the International Space Station?

The Trump administration and Congress are set to collide over the fate of the massive orbital lab.

Next-Gen Weather Satellite Goes Online; NASA Orders Two More for $460M

The first satellite in the new Joint Polar Satellite System passed all its tests and is fully operational.

NOAA’s Newest Weather Satellite Isn’t Working Right

The satellite's “premiere” instrument gets too hot at night and engineers are struggling to find out why.

The Mystery of the ‘SpaceBees’ Just Got Even Weirder

As the government investigates an unauthorized satellite launch, amateur trackers are watching the skies for clues.

The U.S. Government Wants to Start Charging for the Best Free Satellite Data on Earth

The government says the cost of sharing the data has grown as more people access it.

NASA Soups Up Mars 2020 Robot with Hi-Def Ears and Its Own Drone

The drone's helicopter rotors must spin 10 times faster than on Earth.

Congress Is Quietly Nudging NASA to Look for Aliens

The space agency hasn't funded the search for extraterrestrial intelligence for 25 years. Could that soon change?

Are We There Yet?

How scientists and engineers handle a spacecraft’s months-long journey to Mars.