How to Measure the Earth’s Radius With Legos

Make sure your angles are in units of radians (not degrees), where 2π radians = 360 degrees. But after that you will get the ...
Smithsonian Magazine

A Planet Slammed Into Earth 4.5 Billion Years Ago, Forming the Moon. The Projectile May Have Been Our Neighbor

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...
Dinosaur Discovery on MSN

The earth-shaking giant that redefined the limits of dinosaur size

This video uncovers the story of a dinosaur so immense that each step sent vibrations through the ground. Scientists believe ...
Space on MSN

Earth-Size Planet Found In TOI 700 System's Habitable Zone

NASA’s Transiting Exoplanet Survey Satellite (TESS) has been used to discover Earth-size planet TOI 700 e. It is "orbiting ...
IFLScience

How Eratos­thenes Measured The Earth's Circumference With A Stick In 240 BCE, At An Astonishing 38,624 Kilometers

Though the exact length of a "stadia" is unknown, his measurement is thought to be accurate to within one percent of the ...