Mercury takes only 88 Earth days to orbit the sun.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Mercury joins the night sky to complete a seven-planet alignment just after sunset for the end of February. Saturn leaves our ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Four planets will be in the parade in January, while seven will align in February. Here's how to see the events.

The dataset covers the period between September 2004 and December 2023 and will enable researchers to explore and model some ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

That is a little over 3% of the average sun-Earth distance. The effect of this seasonal variation on the planet's climate is negligible; Earth's seasons are dictated by the tilt of Earth's axis ...

Uranus has the craziest tilt in your Solar System. Its tilt is about ninety-eight degrees. That means its north pole is ...

An exoplanet is a planet outside our solar system that usually orbits a star in our galaxy. More than 7,000 have been found ...