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

Mercury takes only 88 Earth days to orbit the sun.

Could humans survive on other planets? What would it take to live on Mars, Venus, or even a moon like Titan? From low gravity to toxic atmospheres, every planet presents a unique challenge. Watch as ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's responsible for the orbits of the planets and their satellites ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

Scientists are studying Saturn's moon Titan to assess its tidal dissipation rate, the energy lost as it orbits the ringed planet with its massive gravitational force. Understanding tidal dissipation ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's responsible for the orbits of the planets and their satellites ...