Here's a hypothetical: a telescope detects an asteroid between 100 and 300 meters in diameter racing through our solar system at 14 kilometers per second, 57 million kilometers from Earth. 

Astronomers estimate a one percent risk the space rock will collide with our planet on April 27, 2027. What should we do?

Scientists in Israel on Monday unveiled a 3D print of a heart with human tissue and vessels, calling it a first and a "major medical breakthrough" that advances possibilities for transplants.

Anonymous to the public just days ago, a U.S. computer scientist named Katie Bouman has become an overnight sensation due to her role in developing a computer algorithm that allowed researchers to take the world's first image of a black hole.

What if you could send an astronaut into space for a year and monitor him closely along with his identical twin brother on Earth?

Israel's attempt at a moon landing failed at the last minute Thursday when the craft suffered an engine failure as it prepared to land and apparently crashed onto the lunar surface.

Chinese scientists have implanted human brain genes into monkeys, in a study intended to provide insights into the unique evolution of human intelligence.

Astronomers on Wednesday unveiled the first photo of a black hole, one of the star-devouring monsters scattered throughout the Universe and obscured by impenetrable shields of gravity.

The world, it seems, is soon to see the first picture of a black hole.

The mystery of methane on Mars may finally be solved as scientists Monday confirmed the presence of the life-indicating gas on the Red Planet as well as where it might have come from.

India's destruction of a satellite with a missile created hundreds of pieces of "space junk," a potentially dangerous situation that established space powers have tried to avoid for years.

India has sought to minimize the threat to orbiting satellites posed by Wednesday's test of an anti-satellite weapon, which experts said was not technically illegal.