In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

NASA is inviting the public to take part in 36 “citizen science” projects that let volunteers contribute to real scientific ...

This quiz will take you on a journey through the life cycle of stars, their classification, and the incredible processes that ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

The James Webb Space Telescope has, for the first time, measured the carbon-rich concoction that forms a moon-forming disk of ...