Gullies on Mars
Gullies on Mars form during the winter, fluidized by carbon dioxide frost, and scientists monitor sites on the planet for activity throughout the year. In this mid-winter scene, a Martian gully is almost…
NASA Selects Proposals to Study Volatile Stars, Galaxies, Cosmic Collisions
NASA has selected proposals for four missions that would study cosmic explosions and the debris they leave behind, as well as monitor how nearby stellar flares may affect the atmospheres…
Denman Glacier in East Antarctica
This photograph shows ripples in the surface of Denman Glacier in East Antarctica that throw shadows against the ice. The glacier is melting at a faster rate now than it…
Thousands Apply to Join NASA’s Artemis Generation, #BeAnAstronaut
More than 12,000 people have applied to join NASA’s next class of astronauts, demonstrating strong national interest to take part in America’s plans to explore the Moon and take humanity’s…
Viewing Our Galactic Center
The central region of our galaxy, the Milky Way, contains an exotic collection of objects, including a supermassive black hole weighing about 4 million times the mass of the Sun…