Asteroid Apophis Will Endure Quakes And Surface Shifts During 2029 Earth Flyby

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A team of astronomers believe that our planet's gravitational pull could alter the surface of Apophis, a near-Earth asteroid (NEA) set to make a close approach to Earth in five years' time.

Apophis is currently 1.97 astronomical units from Earth—or about twice as far from Earth as our planet is from the Sun. But in April 2029, the asteroid will swing right by our planet, and a team of researchers believes that the encounter will cause landslides and quakes on the smaller rock. The team's findings are set to publish in The Planetary Science Journal and are currently hosted on the preprint server arXiv.

⁘The 2029 encounter will induce short-term tidally-driven discrete seismic events that lead to high-frequency surface accelerations that reach magnitudes similar to Apophis' gravity, and that may be detectable by modern seismometers,⁘ the researchers wrote in the paper.

That said, objects around Apophis' size hit our planet once every 80,000 years or so, and their impacts cause grievous damage in the immediate vicinity of their impact, but also can cause chilling changes to the climate. A 2021 NASA analysis found that Apophis' trajectory won't threaten our planet—meaning not even the slightest chance of harm—for at least a century .