New observations show that newly formed planets close to a star help shepherd dust and gas to create more planets farther out ...

Planetary alignments are among the most awe-inspiring phenomena in the sky. They happen when several planets appear to gather ...

The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our Solar System well organized and ...

The Atacama Large Millimeter/submillimeter Array (ALMA) has successfully observed a site of planet formation by detecting a ...

New radio astronomy observations of a planetary system in the process of forming show that once the first planets form close to the central star, these planets can help shepherd the material to form ...

An international team of astronomers has investigated a planetary system consisting of three alien worlds orbiting the star ...

New research reveals a fourth planet in the Kepler-51 system, altering our understanding of this unique system with three ...

An unusual planetary system with three known ultra-low density “super-puff” planets has at least one more planet, according ...

Astronomers discover a fourth planet in Kepler-51, challenging planetary formation theories with new questions.

Before any spacecraft gets launched, it goes through a Planetary Protection Plan, which can vary in its complexity based on ...

In January and February 2025, a six-planet alignment will grace the night sky, offering a celestial spectacle for skywatchers ...

Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...