The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Astronomers simply can't shake the feeling that there's something really off about interstellar object 3I/ATLAS. The mysterious entity, which was first spotted hurtling towards the Sun in early July, ...

And one day, the solar system will cease to exist. But when will the solar system end? And how will it die out? The answers to those questions depend on how we define the death of the solar system.

A model of a solar system first and foremost with a small projector built in, the Science Can Solar System Planetary Projector is a great educational tool for kids.

Take a grand tour of the solar system tonight (Dec. 28) as each of the planets in the solar system will be visible at the same time.

The immensity of space makes it impossible for humans to discover every hiding place the universe holds. Its infinitude makes ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

Astronomers have confirmed that a recently spotted object is an interstellar visitor, and appears to have come from the center of our galaxy.