The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are added to the count on a rolling basis by scientists from around the world, ...

Dr Ryan MacDonald, lecturer in extrasolar planets in the School of Physics and Astronomy at the University of St Andrews, ...

The classical picture of star and planet formation suggests that a star’s rotational axis and the orbital planes of its planets should be aligned. However, exoplanetary systems have considerable ...

Uranus, the seventh planet in the solar system, located between Saturn and Neptune, has long been a mystery. But by analyzing observations made by NASA’s Hubble Space Telescope over a 20-year period, ...

September will have a trio celestial conjunction. Here's how to see the moon and Venus together in Arizona and upcoming alignments.

Can planets be different shapes? This video explores the fascinating world of planetary shapes, discussing how gravitational forces and other factors influence their forms. Discover the scientific ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...

On August 10, six planets—Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune—will line up in an arc in the night sky. Four of these planets—Mercury, Venus, Jupiter, and Saturn—can be seen with the ...

It wasn’t all that many years ago that you could go to a major astronomy meeting and hear the latest news about galaxies and supernovas and quasars and the Big Bang — but nothing at all about planets ...