Near Earth Objects (NEOs) are asteroids and comets that pass by within Earth's vicinity (within about 0.05 AU).
How to read this graph:
This graph shows NEOs within from 30 years ago to 30 years from now.
Earth is shown on the x axis and the asteroids represent the nominal distance of approach. The absolute magnitude is represented by the colour of each asteroid, ranging from ~15 to 20.
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