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.

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.

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