Most explanations rely on "dark energy" to explain the Universe's accelerating expansion rate, but a new study takes a different path.

Gravitational waves are energy-carrying waves produced by the acceleration or disturbance of massive objects. These waves, which were first directly observed in 2015, are known to be produced during ...

Imagine a world without the glow of your screen, the hum of your fridge, or the instant communication across continents.

Einstein was a great thinker who made plenty of mistakes—errors that sometimes led to more meaningful discoveries in physics, ...

Differential equations are fundamental tools in physics: they are used to describe phenomena ranging from fluid dynamics to general relativity. But when these equations become stiff (i.e. they involve ...

The gravitational lensing that causes this rare phenomenon cannot be explained solely by looking at observable objects—suggesting that dark matter had a hand in its formation. According to Einstein’s ...

Science. An enigmatic 5,000-year-old funerary monument has been discovered in Spain Science. We have company: a new celestial body joins Earth's orbit and will accompany Earth and the Moon for the ...