Billions of years from now, the Sun will swell into a red giant, swallowing Mercury, Venus, and Earth. But that’s not the ...

In about 5 billion years, the Sun will run out of hydrogen at its core. This will make it swell up into a red giant, as it ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

Scientists have long been intrigued by the search for water beyond Earth, and NASA's 2012 discovery on Mercury has ...

A groundbreaking discovery confirmed by NASA surrounding a young star offers new insights into planet formation and the role ...

Stars that pass close to the solar system could pull planets out of alignment, sending them hurtling into the sun or out into ...