British astronomers may have solved the mystery of an "interstellar object" hurtling towards our planet. Scientists believe the mysterious interstellar visitor may be the oldest comet ever observed.

This most fundamental question was famously posited by none other than Nobel laureate physicist Enrico Fermi (1901–1954).

Well, it's July 12, which means (a) the Steam Summer Sale is over and (b) it's really hot outside in the northeastern U.S. This week, researchers discovered a cool new fish and named it after Darth ...

A mysterious object, first observed hurtling across the solar system on July 1, has now been identified as "very likely to be ...