Since Pluto was relegated to dwarf planet status, almost everyone has agreed that there are eight planets in our solar system ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

This type of thermal energy storage, also known as ice batteries, is being added to buildings in the U.S. for its ability to provide cool air without releasing planet-warming emissions.

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Discover Snapchat Planets, the new Solar System feature on Snapchat+ that ranks your best friends as planets. Learn meanings, ...

The interstellar comet 3I/ATLAS may be out of view of Earth, but orbiters on Mars were able to recently get a look at it.

NASA and the European Space Agency are tracking the 3I/ATLAS interstellar object as it travels past Mars on its way toward the Sun and through the solar system.

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

The Copernican Principle, named in honor of Nicolaus Copernicus (who proposed the heliocentric model of the universe), states ...

It sounds like the plot of a science fiction movie from the 1950s - a giant rogue planet, moving through the galaxy at a record-breaking speed, consuming vast quantities of dust and gas . But this isn ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...