Hubble unveils a deep sea of small and faint early galaxies

A team of scientists led by astronomers at the University of California, Riverside has used NASA's Hubble Space Telescope to uncover the long-suspected underlying population of galaxies that produced the bulk of new stars during the universe's early years.

Suzaku study points to early cosmic 'seeding'

Most of the universe's heavy elements, including the iron central to life itself, formed early in cosmic history and spread throughout the universe, according to a new study of the Perseus Galaxy Cluster using Japan's Suzaku satellite.

Video: These noctilucent clouds get an early start

Every summer, something strange and wonderful happens high above the north pole. Ice crystals begin to cling to the smoky remains of meteors, forming electric-blue clouds with tendrils that ripple hypnotically against the sunset sky.

Earliest cave art discovered

Anthropologists have discovered the world's earliest example of wall art, dating back 37,000 years.