Scientists spotted the first early warning sign of a standard type of supernova A star’s death usually comes without warning. But an early sign of one star’s imminent demise hints at what happens before some stellar explosions. In a last hurrah before exploding, a star brightened, suggesting that it blastedContinue Reading

The candidate orbits a planet circling a sunlike star about 5,700 light-years from Earth Some of the same researchers who found the first purported exomoon now say that they’ve found another. Dubbed Kepler 1708 b i, the satellite has a radius about 2.6 times that of Earth, and circles aContinue Reading