An international team of astronomers led by David Pinfield of the University of Hertfordshire has found a brown dwarf that is more than 99% hydrogen and helium.

A new atlas and catalog of the entire infrared sky with more than a half-billion stars, galaxies and other objects captured by NASA's Wide-field Infrared Survey Explorer (WISE) mission was unveiled by NASA Wednesday.

A team of astrophysicists from the University of Rochester and Europe has discovered a ring system in the constellation Centaurus that invites comparisons to Saturn.

Low in the south in the summer sky shines the constellation Scorpius and the bright, red supergiant star Antares. Many of the brightest stars in Scorpius, and hundreds of its fainter stars, are among the youngest stars found near the earth, and a new analysis of them may result in a rethinking of both their ages and the ages of other groups of stars.

The photo of a nearby star and its orbiting companion -- whose temperature is like a hot summer day in Arizona.