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

The universe is vast, and while our solar system is the center of our everyday lives, it is just a tiny part of the cosmic ...

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

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

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

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 ...

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

Experts have confirmed that the mysterious object hurtling towards us, previously dubbed A11pl3Z, is an "interstellar object.

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

A star with mass comparable to our Sun passing within 10,000 astronomical units could significantly disrupt the Oort Cloud, which marks the outer boundary of our solar system beyond Pluto.

Launched in February 2020, the European Space Agency’s (ESA) Solar Orbiter probe has been looping around the Sun with a special purpose in mind: Studying the poles of our star. The planets orbit ...