The ISS has been a symbol of international cooperation since the Cold War - but US-Russian relations are at their worst in years.
SpaceX astronaut flights to and from the International Space Station are becoming routine. But these missions are still high-stakes.
Black holes are encircled by a glowing disk of hot gas. When one black hole approaches another, its strong gravity can bend the other's light.
Every April, Earth passes through a trail of debris left behind by a comet. As debris enters our atmosphere, it burns up and streaks across the...
The CDC has issues special guidance for the specific post-vaccine clots, known as vaccine-induced immune thrombotic thrombocytopenia, or VITT.
NASA entered exclusive negotiations with SpaceX for a $2.9 billion contract, excluding Blue Origin and Dynetics after their first bids were too high.
Both partners in the astronaut couple are part of the SpaceX missions for NASA. But it's getting difficult for their son Theo, McArthur said.
After a few setbacks, Nasa's helicopter will finally get on its way, following its landing with Perseverance back in February.
The six-month stint on the ISS was marked by scientific experiments and crossovers with other astronaut crews.
These are Insider's biggest healthcare stories for the week ending April 16.