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99942 Apophis is a 370-metre-wide asteroid that was once considered a potential impactor on Earth in 2029 and 2036, but is now ruled out by radar observations. Learn about its discovery, orbit, physical characteristics, and future flybys of Earth.
Apophis is a near-Earth asteroid that was once considered a potential impact hazard, but is now ruled out for at least a century. Learn about its discovery, orbit, shape, rotation, and upcoming flyby in 2029, when it will be visible to the naked eye.
Asteroid Apophis, once considered a potential threat to Earth, is now ruled out as a hazard for at least a century. NASA used radar observations and precise orbit analysis to confirm its safe distance and orbit around the Sun.
Apophis, a 1,000-foot-wide asteroid named after the Egyptian god of chaos, will pass near Earth in April 2029. Learn about the three concepts for small spacecraft that could join...
It needs to launch in early 2028 in order to get up close with the infamous asteroid Apophis as it passes Earth on April 13, 2029. The planetary defense mission would study Apophis' composition, ...
A new study finds that the asteroid Apophis could be deflected by a small space rock and crash into Earth on April 13, 2029, but the odds are extremely low. NASA and ESA plan to send...
Apophis is a 375 m asteroid that will pass less than 32 000 km from Earth on 13 April 2029. Learn how ESA and NASA plan to study it from the ground and up close using telescopes, spacecraft and CubeSats.
How big is Apophis? Like most asteroids, Apophis is too small for us to figure out its exact shape and size from Earth. Radar images have shown it measures 450 meters (1500 feet) across its longest axis, equivalent to about 5 football fields and taller than the Empire State Building in New York City.
March 25, 2021. The near-Earth object was thought to pose a slight risk of impacting Earth in 2068, but now radar observations have ruled that out. After its discovery in 2004, asteroid 99942 Apophis had been identified as one of the most hazardous asteroids that could impact Earth.
A real asteroid, Apophis, was used as a mock hazardous object to test the global response of the planetary defense community. The exercise involved multiple observatories, including NASA's NEOWISE mission, and confirmed the asteroid's orbit and impact risk.