Cosmology | Time

In this handout provided by NASA's Mars Reconnaissance Orbiter, dark, narrow streaks on the slopes of Hale Crater, are inferred to be formed by seasonal flow of water on surface of present-day Mars, reported on September 28, 2015.

Scientists Have Discovered Massive Ice Sheets on Mars

The water they contain could be a useful resource for future astronauts

The water they contain could be a useful resource for future astronauts

Kablooey: A NASA illustration of the hot, dense, expanding debris cloud produced by two colliding neutron stars

4 Surprising Facts About the Universe We Just Discovered in a Cosmic Breakthrough

A deep space explosion produced some very cool science

A deep space explosion produced some very cool science

David Reitze, executive director of the LIGO Laboratory at Caltech, announces that scientists have observed ripples in the fabric of spacetime called gravitational waves for the first time, confirming a prediction of Albert Einstein's theory of relativity, during a press conference at the National Press Club in Washington, DC, February 11, 2016.
The machines that gave scientists their first-ever glimpse at gravitational waves are the most advanced detectors ever built for sensing tiny vibrations in the universe.The two US-based underground detectors are known as the Laser Interferometer Gravitational-wave Observatory, or LIGO for short.

Einstein's Theory About Gravitational Waves Was Just Proved Right — Again

A century-old theory proves itself

A century-old theory proves itself

Felicity Jones, Professor Stephen Hawking and Eddie Redmayne attend the UK Premiere of The Theory Of Everything at Odeon Leicester Square on Dec. 9, 2014 in London, England.

Stephen Hawking Is Celebrating His Birthday and a Golden Globe Nod

The famed theoretical physicist turned 73 on Thursday

The famed theoretical physicist turned 73 on Thursday

A theory of love: Eddie Redmayne, as a young Hawking, meets the future Mrs. Hawking

How Stephen Hawking Went Hollywood

James Marsh, director of the poignant Hawking biopic <i>The Theory of Every...

James Marsh, director of the poignant Hawking biopic The Theory of Everything, talks about making a movie with—and about—a living legend

Portrait of the universe as a young man

New Picture: The Universe as a Sulky Adolescent

An ingenious technique reveals data that's been lost for 11 billion years

An ingenious technique reveals data that's been lost for 11 billion years

A discovery that provided evidence for the Big Bang Theory is being called into question

Cosmic Deflation: Doubts Raised Over Blockbuster Big Bang Study

A major new study claimed to find direct evidence of the Big Bang and the t...

A major new study claimed to find direct evidence of the Big Bang and the theory of cosmic inflation. But now scientists aren't so sure