Amy Shira Teitel
Contracting Complaints Put the United States' Manned Spacecraft Program on Hold
Sierra Nevada, the company behind the proposed Dream Chaser, isn't happy about losing its NASA contract to SpaceX.
The Curiosity Rover Has Begun Drilling Into Its Most Interesting Target Yet
Curiosity has already answered its main science question, but it’s just getting to the thing it went to Mars to explore.
One Company's Plan to Build a Space Elevator to the Moon
A new documentary project, 'Shoot the Moon,' is chronicling LiftPort's quest to make this a reality.
Here's Where the Comet-Hunting Rosetta Spacecraft Plans to Harpoon Its Prey
With less than two months to go, ESA has picked the site for the first ever comet landing mission.
Astronomers Found a Star Inside a Star, 40 Years After It Was First Theorized
Such Thorne–Żytkow objects promise to open up a whole new side to the universe that we’ve never known.
Building the Largest Rocket in History Calls for the Largest Tools
Custom-built for its Space Launch System, NASA unveils the largest spacecraft welding tool in the world.
The Time NASA Lost a Mars Orbiter Because of a Metric System Mixup
Using the metric system onboard a spacecraft and imperial on the ground can have disastrous consequences.
Why Is a Long-Banned Chemical Still Choking the Ozone Layer?
Carbon tetrachloride remains abundant in our atmosphere even though we've stopped producing it.
Our Galaxy Is a Lot Less Alone in Space Than We Thought
The Milky Way, it turns out, is part of the absolutely massive Laniakea supercluster.
Europe's Newest Global Positioning Satellites Are in the Wrong Positions
The ESA finds itself with an unfortunate salvage mission.
This Rare Meteorite Will Help Explain When Mars Went Dry
Zircons are like nature’s watches in rocks, and they’re giving insight into Mars's climate history.