You may have heard that people who feel faint should sit with their heads between their knees, but is that true? And how can ...

The ghostly ring Kýklos (from the Greek κύκλος, circle or ring) and the object WR16 both show the environment of rare and ...

In an emotional episode of Antiques Roadshow, collector Vie Carlson was overwhelmed by the high valuation of a scathing letter written by Frank Sinatra.

Update as of February 2025 When Comet G3 reached perihelion, comet watchers observed a sharp increase in brightness as the ...

The main belt asteroid Donaldjohanson is now in sight as the Discovery Program mission prepares for a flyby of the object in ...

Radio telescopes detect signals from billions of years ago, but radio-frequency interference presents challenges.