A total solar eclipse is moving its way across North America Monday. CBS News' Norah O'Donnell, Tony Dokoupil and Bill Harwood are watching the celestial event from Indianapolis as totality takes over Mazatlán, Mexico. Also, astronomer Lucianne Walkowicz explains how scientists are using the opportu

Astronomers have found the earliest stars in the universe After picking up faint signals from the earliest hydrogen gas ever detected, astronomers have found evidence of the very first stars in the Universe, according to a new study published in the journal Nature. The findings have also unexpectedl