Astronomers thought there might be a real-life version of the famous Star Trek exoplanet Vulcan orbiting the star 40 Eridani A. But a new study says no.
Giant Jupiter is closest to Earth for 2024 on December 6. Then Earth will fly between the sun and Jupiter - bringing Jupiter to opposition - on December 7.
Astronomers have discovered a Neptune-sized world orbiting close to a red giant star. And surprisingly, the exoplanet's puffy atmosphere is still intact.
Apollo 8's William Anders captured the iconic "Earthrise" photo on Christmas Eve, 1968. Anders was killed Friday, when the plane he was piloting alone crashed.
World Oceans Day has been honored since 1992. It's a day to raise awareness about how we're connected to the oceans and how we can protect ocean habitats.