Ghostly particles called neutrinos can travel nearly unimpeded across the universe. For the first time, physicists have been able to pinpoint the origin of a powerful neutrino.
The Government Accountability Office released a report warning NASA that further delays in the space agency's commercial crew program could keep American astronauts from reaching the space station.
Astrophysicist Adam Frank has a new book out, Light of the Stars: Alien Worlds and the Fate of the Earth. He talks to NPR's Mary Louise Kelly about it.
NASA posted the glittery image of stars that "live fast and die young" on the eve of Independence Day. It shows a cluster of "huge, hot" stars called NGC 3603, about 20,000 light years away.
Photographs of a young planet orbiting a star provide useful information about how planets form and grow.
The mission includes a plan to bring a sample back to Earth. It's the first time humans have been able to study a C-type asteroid at such a close range for an extended period.