Deep Space 1 Spacecraft at 2.3 Million Miles from Earth
June 30 is Asteroid Day. Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago. The…
June 30 is Asteroid Day. Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago. The…