Mercury, Venus, Earth, and Mars – are all made of solid, rocky material, Jupiter is a gas giant with a composition similar t ...

A new study posits that our planet's gravity will cause seismic activity on Apophis when it makes its close approach in 2029.

The probe will orbit the sun "close enough to pass inside a solar eruption, like a surfer diving under a crashing ocean wave, ...

A Chinese Mars rover may have found evidence of an ancient ocean on the arid Red Planet. According to a new paper in the ...

The fifth planet from the sun, Jupiter is what watercolor dreams are made of. Vibrant bands of clouds ripple around its thick ...

Earth was a frozen wasteland. Then, rising CO2 caused a catastrophic thaw, turning Earth into a "slushy" planet.

Here’s how it works. Mars' magnetic field may have survived 200 million years longer than scientists had thought — crucially, ...

And in its own way, the planet’s rusty red surface tells a story of destruction. Billions of years ago, the fourth planet from the sun could have been mistaken for Earth’s smaller twin ...

NASA's Parker Solar Probe has been whizzing through space since 2018 at incredible speed, but it has yet to reach its final ...

Scientists have developed a new method to compute how tides affect the interiors of planets and moons. Importantly, the new ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Just six light-years from the solar system — in cosmic terms, our ...

It is a world of extremes. Explore facts about our solar system's fastest planet. Mercury is slightly larger than our Moon - 15,329 kilometres around its equator. Its radius, the distance from the ...