Many black holes found in nearby globular cluster

Researchers using the Hubble Space Telescope observed one of the closest globulars to Earth – NGC 6397 and were surprised to find signs of multiple stellar-mass black holes.

Large amounts of O2 in ancient star's atmosphere

Astronomers have detected large amounts of oxygen in the atmosphere of one of the oldest and most elementally depleted stars known. This finding provides an important clue on how oxygen was produced in the first generations of stars.

Scientist finds elusive star with origins close to Big Bang

The discovery of this approximately 13.5 billion-year-old tiny star means more stars with very low mass and very low metal content are likely out there—perhaps even some of the universe's very first stars.