sciences

NASA Spacecraft Crashes Into Asteroid In Defense Test

A NASA spacecraft rammed an asteroid at blistering speed Monday in an unprecedented dress rehearsal for the day a killer rock menaces Earth.
By Marcia Dunn, AP

A Pioneer For African-American Women In Space, Mae Jemison's Feats Are Boundless

Mae Jemison joined NASA in 1987, and in 1992 became the first African-American woman to travel to space.
By