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 ...

Long-period comets originate from a region so distant it remains largely theoretical. This exploration dives into the concept of the Oort cloud, a massive spherical halo of icy remnants surrounding ...

There is a question many of us ask ourselves when we look at the night sky: Is this all there is? Some nights, space appears blank, and you begin to wonder how lonely we might be. To break this ...

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 ...

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 ...