Helioviewer.org. 100 Hours of Astronomy. Asteroid Watch. Recent News February 5, 2015NASA's Dawn spacecraft, on approach to dwarf planet Ceres, has acquired its latest and closest-yet snapshot of this mysterious world. › Read more January 27, 2015NASA's Dawn spacecraft has returned the sharpest images ever seen of the dwarf planet Ceres. › Read more January 22, 2015There has been a significant increase in the amount of water "pouring" out of the Rosetta mission's comet. › Read more › More news Next Five Close Approaches Average distance between Earth and the moon is about 239,000 miles (385,000 kilometers).
The Asteroid Watch Widget tracks asteroids and comets that will make relatively close approaches to Earth. The Widget displays the next five Earth approaches to within 4.6 million miles (7.5 million kilometers or 19.5 times the distance to the moon); an object larger than about 150 meters that can approach the Earth to within this distance is termed a potentially hazardous object. Hello From Earth. International Meteor Organization. NASA Art. Be A Martian. The Gateway to Astronaut Photography of Earth. We Choose the Moon. March to the Moon.