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 ...

Scientists like to refer to our planet as residing in the "Goldilocks zone," where it's neither too hot nor too cold, and just the right distance away from the Sun to support life. But in the classic ...

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.

Scientists have discovered a colossal object approximately 435 miles wide in the frigid outer reaches of our solar system, ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Tianwen, which means "questions to heaven," is the name given to China's program of robotic Solar System exploration. Tianwen ...

Astronomers have just discovered a new celestial body in our solar system that could challenge major space theory. 2017 OF201 ...

In the vast expanse of space, an estimated 1 million near-Earth objects (NEOs), also known as near-Earth asteroids, are ...

The researchers called it one of the most distant visible objects in our solar system, and said its existence indicates that a vast expanse of space beyond the outermost planet Neptune and a region ...

Webb Telescope Captures Its First Direct Images of Carbon Dioxide Outside Solar System Mar. 17 ... These two exoplanets, a super-Earth and a sub-Neptune, are common in the galaxy, yet are absent ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...