... Asteroids - usually less massive than comets - frequently whiz by inside the Moon 's orbit, with four doing so far in this ... In the distant past, asteroids have even struck the Earth. ...
... Geologists and paleontologists often entertain the idea of a large asteroid or comet impacting the Earth as the culprit. ... the right age, the crater is consistent with the impact of an asteroid of sufficient size (6 to 12 miles wide) to cause the ...
... Geologists and paleontologists often entertain the idea of a large asteroid or comet impacting the Earth as the culprit. ... the right age, the crater is consistent with the impact of an asteroid of sufficient size (6 to 12 miles wide) to cause the ...
... It's easy to see a few of the brighter asteroids with binoculars. Several hundred can be seen with small telescopes. ... And even today, many asteroids and comets are still discovered by amateur astronomers. ...
... Asteroid Rendezvous (NEAR) mission promises to answer fundamental questions about the nature of near-Earth objects such as ... These asteroids are closely related to the more numerous "Main Belt" asteroids that orbit the Sun in a vast doughnut-shaped ...
... 5 comets and 15 asteroids, including Chiron, the most distant asteroid known when it ... asteroid outside Pluto's orbit was found, followed by five additional trans ... Asteroid a e Incl Node Arg perih Mean an Per Name a.u. deg deg deg deg yr 944 5 ...