The Arecibo Message Fifty Years Later
In November 1974, astronomers used the radio telescope at Puerto Rico's Arecibo Observatory to send a hello to the universe.
NASA’s Europa Clipper
The spacecraft will investigate whether an icy moon of Jupiter can support alien life.
“Follow the Salt”: A New Strategy for Finding Life on Mars
Scientists might be looking for Martian life in the wrong place.
Finding Caves on the Moon Is Great. On Mars? Even Better.
The recent discovery of a large cave on the Moon highlights the importance of caves not just for future space explorers but astrobiology as well.
Cassini’s First Years at Saturn
For many years, the Cassini probe to Saturn provided a stable research platform that scientists used to transform our understanding of the ringed planet.
NASA’s Search for Life on Mars
It’s a rocky road for its rovers, a long slog for scientists—and back on Earth, a battle of the budget.
NASA’s Deepest 3D Fly-through of the Universe
From the present day all the way to less than 400 million years after the Big Bang, we're seeing how the Universe grew up like never before.
Why Hasn’t NASA Sent Anyone to Mars?
The Perseverance mission to Mars represents a considerable step forward for the space program. But are rovers as good as it gets?
How the Mercury 13 Fought to Get Women in Space
In 1962, the House of Representatives convened a special subcommittee to determine if women should be admitted into NASA’s space program.