Which of the following statements about NEO's (Near Earth Objects) is TRUE?
A) we have identified just about all NEO's with diameters greater than 1 km
B) no NEO has passed closer to the Earth than the orbit of the Moon
C) it is unlikely that any NEO's have hit the Earth during our planet's history
D) NEO's can include both asteroids and comets that cross the Earth's orbit
E) we are not able to obtain information about the shape or size of any of the NEO's at present

Question

Quizplus · Accepted Answer

NEO's can include both asteroids and comets that cross the Earth's orbit. We have identified most NEO's with diameters greater than 1 km, but not all. Several NEO's have passed closer to Earth than the Moon, and some have even hit our planet in the past. While we have information about the size and shape of some NEO's, there are still many that we know very little about.

Which of the Following Statements About NEO's (Near Earth Objects)