When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

Proxima Centauri b is the closest known exoplanet to our solar system that is thought to be within the habitable zone of its star.

Sedna, a distant dwarf planet three-quarters the size of Pluto, is inching toward the brightest star in our sky — and in 2076 ...

On October 9, 2008, the State Space Agency of Ukraine sent a message towards Gliese 581c. Unlike the Voyager records, whose messages were chosen by a committee chaired by renowned physicist Carl Sagan ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

Astronomers have confirmed the discovery of an "interstellar object" named 3I/Atlas passing through the inner solar system.

Astronomers have announced the discovery of A11pl3Z, a massive new interstellar object entering our solar system.

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

NASA's James Webb Space Telescope has been unwaveringly focused on our universe. With its unprecedented power to detect and ...

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually ...