Scientists can't use tape measures, rulers or lasers to measure the astronomical distances to stars and galaxies, so how do we do it? Trump buys red Tesla Model S at White House alongside Elon ...

Some stars in our galaxy pulse like musical instruments, and scientists have found a way to listen in. These rhythmic ...

Only the three stars that make up the Alpha Centauri system lie closer to us. The planets newly discovered around Barnard’s ...