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NASA formally announces that asteroid 2024 YR4 now poses "no significant threat" to Earth in 2032 and beyond as the chances of an impact drop to 1-in-59,000 (0.0017%). This means a planetary defense mission to intercept and deflect the object in 2028 during a close flyby of Earth is no longer necessary.
2025-02-24

NASA's Center for Near-Earth Object Studies announces that the chances of asteroid 2024 YR4 impacting Earth on 22 December 2032 has increased to 3.1% (1-in-32) following further observations of its orbital trajectory. It has now surpassed the threat of 99942 Apophis which once had a 2.7% chance of hitting Earth during 2004 before later being ruled out.
2025-02-18

NASA space probe Lucy flies by asteroid 152830 Dinkinesh, the first of eight asteroids planned to be visited by the spacecraft.
2023-11-1

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

2015 TH (previously known as V774104), a 100–400 kilometer asteroid, is announced as possibly the fourth most distant known Solar System object from the Sun at nearly 90 (±10) times Earth's distance from the Sun.
2018-03-13

NASA's "Dawn" spacecraft enters orbit around the dwarf planet Ceres.
2015-03-6

Scientists report Chinese deep-space probe Chang'e 2 successfully took a series of images of the asteroid 4179 Toutatis during flyby on 13 December.
2012-12-16

4179 Toutatis, an asteroid about 3 miles wide, passes within 4.3 million miles or 18 lunar distances of the Earth.
2012-12-12

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