Normal gases, like the air you breathe on Earth, are made up of atoms bouncing around. Atoms consist of a positively charged bundle of particles called the nucleus and negatively charged particles ...

The UV Index measures the ultraviolet radiation coming from the sun. There are three primary types of UV radiation: ...

Created by the sun, the protective bubble of the heliosphere shields our solar system from harmful radiation. A new mission ...

The comet is one of only three of its kind recorded in history. But others think there could be more to this celestial object.

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.

3I/ATLAS is named for its status as one of three interstellar objects ever discovered in our cosmic neighborhood, as well as ...