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→Controversy
explanation for why they aren't spectrally similar.
explanation for why they aren't spectrally similar.
==Near Earth Asteroids
==Near Earth Asteroids==
Asteroids with orbits that bring them within 1.3 AU
Asteroids with orbits that bring them within 1.3 AU
(121 million miles/195 million kilometers) of the Sun are
(121 million miles/195 million kilometers) of the Sun are
Estimates suggest at least a thousand NEAs may be large
Estimates suggest at least a thousand NEAs may be large
enough -- 0.6 mile (1 kilometer) or more in diameter -- to
enough -- 0.6 mile (1 kilometer) or more in diameter -- to
threaten Earth.
threaten Earth.
==Strikes==
==Strikes==