(fotograzia/Moment/Getty Images) In the beginning, there was moosh. At the dawn of the Solar System, young Earth was little more than a squishy ball of half-molten rock. Somehow, over hundreds of ...

In the beginning, there was moosh. At the dawn of the Solar System, young Earth was little more than a squishy ball of half-molten rock. Somehow, over hundreds of millions of years, parts of that ...

Beyond Pluto lies a hidden shell of icy bodies that may surround the entire Solar System. The Oort Cloud has never been directly photographed, but its comets may reveal the shape, history, and true ...

NEW YORK — Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show opening to the public on Monday. At the American Museum of Natural History last ...

Dutch astronomer Jan Oort, born April 28, 1900, studied physics and astronomy and went on to a long career at Leiden University. Oort was a pioneer in 20th-century astronomy, revolutionizing our ...

This illustration shows the current positions of the Voyager missions with relation to the Sun. Currently considered outside the solar system, the spacecrafts will nonetheless take close to 300 years ...