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

Evolving dark matter may explain cosmic acceleration. Observations support a mixed model. For years, a stubborn puzzle has ...

Here’s what you’ll learn when you read this story: Einstein’s Theory of General Relativity, an immensely important update to Newton's Law of Universal Gravitation, is currently our best approximation ...

GREENBELT, Md. – Recent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy — the origin of cosmic rays. Outer space is a vast ...

A research team has developed a large-area suspended graphene and irradiated the thinnest graphene target with an ultra-intense laser to realize high-energy ion acceleration. Their findings will be ...