Astronomers have long suspected a city-sized neutron star hides within the dusty shroud of SN 1987A. And now, they’re closer than ever to proving their case. ...read more
The world was waiting for Voyager's encounter with Saturn's when Discover's debut issue hit newsstands in 1980. Since then, the Voyager spacecraft have boldly gone where no probes have gone before. ...read more
Sellers claim that hand-held UV-C light wands sanitize surfaces, but many are underpowered and others are fakes. Here’s what you need to know. ...read more