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

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

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

Understanding where Earth's essential elements came from—and why some are missing—has long puzzled scientists. Now, a new ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

Planetary alignments aren't rare, but they can be when they involve six of the eight planets in our solar system.

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

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

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

Uranus has the craziest tilt in your Solar System. Its tilt is about ninety-eight degrees. That means its north pole is ...