The breakthrough marks the first time that the core of a fusion reactor has given out more energy than it has taken in, but significant obstacles still need to be overcome.
An unprecedented audio recording could reveal key details about extreme weather on the Red Planet.
What lurks at the center of a black hole? Studying the space-time ripples from black hole collisions could reveal an answer.
The bones of a possible ancient human sacrifice victim have been found in a bog in Denmark.