It would take 15 billion years for the clock that occupies Jun Ye's basement labto lose a second—about how long the universe has existed

Astronaut-photographer Thomas Pesquet recently captured photos of blue southern lights and other spectacular Earth images

The history of life on Earth has often been likened to a four-billion-year-old torch relay. One flame, lit at the beginning of the chain.

The last major space weather event struck the Earth in 1859. Smaller, but still significant, space weather events occur regularly.

According to new research, simple animal species’ may have existed on Earth far longer than humans anticipated, approx 890 million years

Scientists at the University of Southampton have discovered that changes in Earth's orbit may have allowed complex life to emerge and thrive

Scientists believe that 1,715 star-systems could have spotted Earth since human civilization blossomed about 5,000 years ago.