Stars come in many forms, but some types are so rare that only a handful exist in our galaxy. For example, O-type stars ...

Besides being a point of light, a star is a luminous, spherical mass of plasma, enough to hold itself together under its own gravity. On its own, though, gravitational rounding isn't enough. What ...

When you look up at the night sky, it might seem like all stars are basically the same, as just tiny points of light scattered across the dark. However, in reality, stars come in an astonishing range ...

In the early days of telescopic astronomy, you could only focus on one small region of the sky at a time. Careful observations had to be done by hand, and so much of the breakthrough work centered ...

Life in the universe could depend on the vicissitudes of two wildly different types of stars. A team of astronomers recently used the venerable Hubble Space Telescope to study the light of 495 stars — ...

Joshua Rapp Learn is an award-winning D.C.-based science journalist who frequently writes for Discover Magazine, covering topics about archaeology, wildlife, paleontology, space and other topics. View ...

A survey of small, cool stars is helping to narrow in on the conditions that might set the stage for life beyond our solar system. A look at about 200 ultracool dwarf stars shows that they lack ...