Remembering the Pioneering Journey of Indian-American Astronaut Kalpana Chawla

Deer browsing is just one of many factors shaping North American forests

Space diet rich in veggies and fish could boost astronaut health

Mars passes behind the Moon tonight for U.S. and Central American observers located south of about 37° north latitude. For those farther north, the Moon passes about 0.1° below the Red Planet.