Both of the above never completed a full revolution of Earth However, in 2006 we had a mini-moon that stayed with us for a full year. Asteroid 2006 RH120 remained gravitationally bound to Earth ...

Earth is about 4.5 billion years old. Scientists think that by 4.3 billion years ago, Earth may have developed conditions suitable to support life. The oldest known fossils, however, are only 3.7 ...

Two times a year, Earth’s orbit and its axial tilt combine so that the sun sits right above Earth’s Equator, casting the dividing line between the light and dark parts of the planet—the so ...

The building blocks of life on Earth may have been fueled by tiny sparks hopping between water droplets. Four billion years ago, Earth was a lifeless world, but a dynamic one. Crashing waves ...