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.

Astronomers have discovered yet another alien visitor to the Solar System. This one appears to be a comet, a ball of dust, ...

As space exploration continues to reveal new and fascinating insights into the planets of our solar system, the possibility ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Ancient meteorite reveals a protoplanet formed in the outer Solar System earlier than thought, reshaping planet formation ...

Astronomers have spotted centimeter-sized “pebbles” swirling around two infant stars 450 light-years away, revealing the raw ...

It has been suggested that the most likely planet in our solar system for humans to try to terra-form (make Earth-like) is ...

Our Solar System is home to eight extraordinary planets, each with its own unique features, mysteries, and beauty. This cosmic journey takes you from the Sun-scorched surface of Mercury to the icy ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

Using infrared imaging data collected by the two satellites over a 10-year period from 2015 to 2025, the team estimated ...

The outlook is promising for future long-term monitoring of planets across multiple wavelengths. Infrared imaging data from ...

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