FAST's 500-meter (1,640-foot) dish makes it the world's largest single-dish radio observatory. It's expected to open to international observers in 2021.

SpaceX launched 60 more of its Starlink satellites on January 20, 2021. SpaceX ultimately intends to launch tens of thousands of these satellites, to provide global internet access. Here's why astronomers are concerned.

This final test of NASA's SLS megarocket was needed to launch the first uncrewed mission in the Artemis program - Artemis 1 - by the end of 2021. Now the program's schedule is uncertain.

The surface features of brown dwarfs - objects midway in mass between planets and stars - can't be seen. But researchers have found a way to reveal Jupiter-like stripes and bands in the atmosphere of the closest brown dwarf, Luhman 16B.

Here are some of the space missions to keep an eye out for in 2021.

A close look at the "stellar stream" known as Theia 456 finds it contains contains 468 stars born at the same time.

Astronomers have a new measurement for the distance of quasar J0313-1806, making it the new record-holder for the most distant quasar known. We're seeing it just 670 million years after the Big Bang, or more than 13 billion light-years away.

Space'sX CRS-21 Cargo Dragon returned to Earth from the ISS today, January 13, 2021, splashing down off the coast of Florida for the first time ever. The ship also succeeded in the first-ever autonomous undocking.

New work agrees with older research suggesting the oldest light in the universe - from the most distant galaxy yet known - started its journey toward us 13.77 billion years ago.

Astronomers have obtained one of the best images yet of a brown dwarf, an object in a mass range midway between stars and planets. This brown dwarf - called HD 33632 Ab - lies 86 light-years from our sun.