Freelancer
What the Polaris Dawn mission could reveal about human health in space
The Polaris Dawn astronauts have returned to Earth — but the real work has just begun.
Why NASA is sticking with Boeing
The Starliner debacle fueled speculation that the space agency would dump Boeing. But if it did, it would be left with SpaceX — and Elon Musk.
The invisible problem with sending people to Mars
Getting to Mars will be easy. It’s the whole ‘living there’ part that we haven’t figured out.
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Space lasers!
If we want to go to Mars, we need a better way to reliably relay messages through space. The solution could be optical communication, or lasers.
NASA collected a sample from an asteroid for the first time — here’s why it matters
The OSIRIS-REx mission, launched in 2016, has collected as much as several hundred grams of asteroid material, which could help scientists understand the earliest stages of the Solar System.