The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Gaining insight could help understand the timing and process of life's emergence. A research team led by a Rutgers-New ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

This provides another piece of the puzzle to understand how planets and ... could reshape our understanding of the Earth-Moon system and the broader solar system. The ...

Astronomers at the NASA Goddard Space Flight Center may have discovered a star hurtling through the Milky Way with a planet ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

New research reveals that Earth and Mars lost essential elements due to violent cosmic collisions, not early planetary ...

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...