Asteroids Flashcards
What are asteroids?
small celestial bodies of rock or metal / fragments of rocky materials with similar compositions .
What is an asteroid belt?
a majority of asteroids found within and between Mars and Jupiter
What are trojans?
they share an orbit with a larger planet or the planets natural satellite.
What shares the same orbit with Jupiter?
Jupiter Trojans
what does NEAs stand for
near-Earth asteroids
What are NEAs?
asteroids that are within collision range of Earth
What is the Cretaceous-Paleogene extinction
happened 66 million years ago which caused the extinction of dinosaurs
how are planets named?
planets are named after the astronomer who found them
Ceres was named after who?
Italian Astronomer Giuseppe Piazzi
What are planetoids?
Asteroids that are big enough to land on and to walk on
