An overview of the history and accomplishments of NASA's Apollo missions.
Anthropologist reveals a potentially big flaw in the Search for Extraterrestrial Intelligence (SETI).
Mysterious ultra-fast pinpricks of radio energy keep lighting up the night sky and nobody knows why.
For the second time ever, the Laser Interferometer Gravitational-Wave Observatory (LIGO) has spotted two ultradense stellar remnants known as neutron stars violently crashing together.
Despite the fact that humans landed on the moon many times during the Apollo missions half a century ago, doing so remains a tough business.
Astronomers have spotted enormous column-shaped structures called Giant Elephant's Trunks in the galaxy