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Overview. Asteroid 99942 Apophis is a near-Earth object (NEO) estimated to be about 1,100 feet (335 meters) across. When it was discovered in 2004, Apophis was identified as one of the most hazardous asteroids that could impact Earth. But that impact assessment changed after astronomers tracked Apophis, and its orbit became better determined.
26 mar 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.
In fact, collisions of asteroids with the early Earth may have been the key to delivering water to our planet (e.g., Daly & Schultz, 2018), enabling life as we know it. Now, billions of years later, the influx of small bodies in the inner Solar System is much lower.
24 maj 2021 · Asteroids, comets and other Near Earth Objects (NEOs) often appear impossibly remote, occupying spaces and times beyond the boundaries of our planet. At the same time, they are sources of fascination, packaged as ‘apocalypse pop-culture’ through movies of precarious cosmic (near)encounter, which ironically distance the idea of collision ...
3 dni temu · The discovery of Massalia as an L-chondrite-like family in the inner belt, in between the two most effective pathways to the near-Earth environment (the ν 6 secular resonance and the 3:1 mean ...
31 lip 2018 · Mapping the Celestial Hazard. Near-Earth Objects (NEOs) are asteroids and comets in orbits that bring them into the inner solar system, within 121 million miles (195 million km) of the sun,...
19 kwi 2024 · In particular, 469219 Kamo‘oalewa (2016 HO3), an upcoming target of China’s Tianwen-2 asteroid sampling mission, exhibits a meta-stable 1:1 mean-motion resonance with Earth.
