NASA Discovers Earth 2.0

A newly discovered planet—called Kepler-452b—is so similar to Earth that NASA has dubbed it Earth 2.0. The far-off planet rests roughly 1,400 light years away in the constellation Cygnus and orbits inside its star’s habitable zone, where it’s warm enough for liquid surface water. Kepler-452b’s similarities to Earth are uncanny; it revolves around its sun once every 385 days, is roughly the same size and …

NASA’s Long-Awaited Image of Pluto

Nearly a decade ago, NASA launched its New Horizons spacecraft into space, tasked with exploring our vast solar system and sending information home. After over three billion miles of flight, it has finally reached its ultimate destination: Pluto. Until now, details of the controversial dwarf planet have only been speculative—often describing it as oblong and gray—but information from New Horizons’ up-close encounter tells a different …

Happy Birthday Hubble

Today, 24 April 2015, the Hubble Telescope turns 25 years old. During its quarter-century, the Hubble has produced an incredible array of now iconic images, including the famous Hubble Deep Field—where the telescope aimed its lens at a tiny speck in space for 10 days, revealing thousands of galaxies. The Hubble has been an enormous aid to astronomers and has been hailed one of the …