For most of us, the countless bright spots in the nighttime sky all seem to be stars. But in fact, some of those spots are actually planets, or distant suns, or even entire galaxies located billions ...

Astronomers have developed a new way of measuring cosmic distances by listening to the frequencies of "music" played by vibrating stars that collectively act as a vast orchestra of different cosmic ...

With very few exceptions, stars are so distant that even powerful telescopes see them only as dimensionless specks of light. How, then, can we know their sizes? Fortunately, there’s a simple ...