US Secretary of Defense Robert Gates (l.) and Secretary of State Hillary Clinton look through binoculars toward North Korea during a visit to observation post Ouellette at the Demilitarized Zone on Wednesday in Panmunjon, South Korea.
The fourth-brightest source of radio emissions in our sky, the NGC 1316 galaxy beams thanks to the insatiable appetite of its black hole. Now astronomers have imaged the galaxy, and found it smeared with the remains of other galaxies it has demolished.
Scientists have found at least three and perhaps four planets that appear to be in the habitable zone of a triple-star system. Finding so many exoplanets in one star system's habitable zone is a first.
Scientists say they have found a planet seven times more massive than Earth orbiting in a star's habitable zone 42 light-years away. It could have seas, and perhaps just as important, it could have an Earth-like climate because it has a day-night cycle.