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.

Jumping back in time, Thuban was positioned as a North Star some 4,700 years ago, as early civilizations thrived in ...

The lone planet confirmed to be in the system is squeezed in between the two, orbiting at a distance similar to Earth's ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent ...

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the ...

The curious minds at What If discuss how reheating Earth's core might be a solution to saving the planet. GOP Calls for ...

With an atmosphere, by mass, of primarily hydrogen (76 per cent) and helium (24 per cent), and by volume of 89 per cent ...

At a frigid -125 degrees Fahrenheit (-87 degrees Celsius), WD 1856+534 b is the coldest planet ever directly observed, surpassing the previous record-holder, Epsilon Indi Ab, which stands at around 35 ...

The ocean covers most of Earth and may exist beyond it—scientists now suspect a distant exoplanet could be entirely covered ...

Sydney Chandler takes the reigns of the "Alien" TV series as Wendy, a "hybrid" — a child whose brain has been infused into a ...

Scientists eye LHS 1140 b as a top candidate for habitability, with signs of a warm ocean and a possible atmosphere just 41 ...