From key figures of the American Revolution to scenes from Route 66, these are the new USPS stamps hitting post offices this spring.

Nearly a millennium ago, astronomers witnessed a brilliant new star blazing in the sky—a supernova so bright it was visible ...

NASA’s Hubble Space Telescope revisits the Crab Nebula, showing the movement of filaments and changes in gas composition over ...

Learn how galactic archaeology uses chemical clues to uncover how galaxies formed and evolved over billions of years.

A team of astronomers led by the Center for Astrophysics | Harvard and Smithsonian have for the first time used galactic archaeology, the study of detailed chemical fingerprints in deep space, to ...

By reading the chemical “fingerprints” of a distant galaxy, astronomers reconstructed its 12-billion-year evolution. This new ...

A massive stellar wind bubble sculpts the nebula into the shape of the Norse god's famous helmet.

By comparing new Hubble observations with images first taken in 1999, astronomers traced the continuing expansion of one of the sky’s most studied supernova remnants, energized by a rapidly spinning ...

Extragalactic archaeology has come of age, with astronomers for the first time reconstructing the history of a spiral galaxy.