Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

The European Space Agency has released the first batch of large-scale images from the Euclid space telescope, which ...

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

Scientists have made the record-breaking detection of oxygen in an ancient galaxy that existed just 300 million years after ...

The latest discovery marks the furthest detection of oxygen ever made and defies what we thought about how galaxies formed in the early universe.

The “dark energy” field that has fueled the expansion has been weakening over the past 4 billion to 5 billion years, new data ...

Astronomers zoomed in on a stellar behemoth in the Larger Magellanic Cloud, a galaxy ... rotation of space station crews. A SpaceX Falcon 9 lifted off from California carrying the telescope ...