How far away it is: 93 million miles (150 million km) ...

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

As summer settles in and temperatures climb in the Northern Hemisphere, it’s impossible to forget just how much the sun ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The Earth could be soon flung out of orbit or into the sun - all thanks to a passing star - Either way, the sun is likely slated to consume Earth in billions of years ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

"We didn't know what exactly to expect from these first observations – the sun's poles are literally terra incognita,” Sami ...

The sun is unique in that it's the only star in our solar system. Up to 85% of stars have at least one companion star. The sun contains over 99% of the mass of our entire solar system.

The larger a star is, the more rapidly it burns through its hydrogen. Some of the largest known stars — such as those with masses 40 times that of the sun — will live just 1 million years.