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A 1 m near-Earth asteroid is discovered before falling as a harmless bolide over central Ontario, Canada, at 08:27 UTC. It is the sixth asteroid to be discovered before impacting Earth.
2022-11-19

Astronomers rule out the chances of ~30-meter asteroid 2006 QV impacting Earth in September 2019 by eliminating the possibility of its passing through an area where it would have to be if it were on an impacting orbit. Prior to this, the asteroid had been given a one-in-7,000 chance of impacting Earth.
2019-07-17

NASA's "Dawn" spacecraft exhausts all of its hydrazine fuel propellant and without a functioning maneuvering system enters into uncontrolled motion around dwarf planet Ceres, thus ending its 11-year mission.
2018-11-1

A newly observed near-Earth asteroid 2013 EC passes Earth within the orbit of the Moon.
2013-03-4

Near-Earth asteroid 2012 DA14 with an estimated diameter of about 50 m comes within 17,200 miles (27,700 km) from the Earth's surface. This distance is a record close approach for a known object of such size.
2013-02-15

NASA announces new data effectively rules out a 2036 Earth impact for the near-Earth asteroid 99942 Apophis.
2013-01-13

NASA observes the asteroid YU 55 as it makes a close Earth flyby, passing within 0.85 lunar distances (about 201,700 miles) of the Earth. YU 55 is approximately 400 m across, and is the largest asteroid to make a close pass since 1976.
2011-11-8

Near-Earth Asteroid 2011 MD passed within 12,000 kilometres (7,500 miles) of the Earth's surface at about 13:00 EDT flying over the South Atlantic Ocean, off the coast of Antarctica.
2011-06-27

Forty-one scientists publish a paper in "Science" affirming that the Cretaceous–Paleogene extinction event, the large-scale mass extinction of dinosaurs and other lifeforms on Earth ~65.5 million years ago, was caused by an asteroid impact.
2010-03-4