The drive converts electrical energy into thrust without the need for rocket fuel.

New measurements also reveal that Pluto is slightly larger than expected.

“We need to be super careful with AI. Potentially more dangerous than nukes.”

Biologists are investigating how rarely-seen whale washed up on Massachusetts beach.

Thought to belong to a person indigenous to the eastern United States.

“We’ve only seen surfaces like this on active worlds like Earth and Mars,” scientist says.

Since 2009, 12 planets less than twice the size of Earth have been discovered in the habitable zones of their stars.

Daisies have been exposed to radiation from Fukushima since March 2011.

Asteroid 2011 UW-158 will pass within 1.5 million miles from Earth.

Small humanoid solved a philosophical problem to demonstrate it could understand a question…