Asteroid Discovery 1980-2012
A graphic showing asteroids discovered by time, circling the sun.
Note that the sparse beginning starts at 1980. Not 1920, 1980. Then see how the area past Mars goes from "speckled" to "smeared". Not to mention the rapid increase of dots intersecting Earth's orbit. The narration gives some details as to why.
Note that the sparse beginning starts at 1980. Not 1920, 1980. Then see how the area past Mars goes from "speckled" to "smeared". Not to mention the rapid increase of dots intersecting Earth's orbit. The narration gives some details as to why.
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