What If on MSN

Earth could face a planetary rival, and their orbits might not survive

In 2015, NASA’s Kepler Space Telescope identified one of the most Earth like planets ever discovered, Kepler 452b. It orbits ...
What If on MSN

Earth would face 5 seconds of absolute chaos if these things suddenly disappeared

There are some things you just can’t live without. Like gravity, oxygen, the Sun’s warmth. And we’re about to take those ...
Phys.org

'Blue marble': How a half-century of climate change has altered the face of the Earth

In December 1972, NASA's final Apollo mission (Apollo 17) took the iconic "Blue Marble" photo of the whole Earth. Many, including science fiction writer Arthur C. Clarke, had expected that the sight ...