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'What Is That In The Sky?' Floridians Catch Meteor's Close Brush With Earth

It wasn't a bird or a plane that gave Floridians a shock late Monday night.It wasn't even Superman. A meteor shot across the sky around 10 p.m. Monday. On social media, residents along the state's Atlantic coast, from West Palm Beach south to Miami, shared videos on Twitter of the surprising sight. Dashcam footage and security videos showed a still, dark night suddenly lit up by what appeared to be a large fireball streaking diagonally across the sky. In just a few seconds, it was over. According to NASA, an asteroid is a small rocky object that orbits the sun. A meteor is what happens when a meteoroid – a small piece of an asteroid or comet – burns up upon entering Earth's atmosphere, creating a streak of light in the sky. There's disagreement online over whether the Monday night visitor was the asteroid 2021 GW4 that was expected to make a close shave with Earth's surface Monday evening.Close for a space rock anyway. It was expected that 2021 GW4 would fly between 12,000 and 16,00 miles from Earth's surface, according to EarthSky.org. It's estimated to be traveling at 18,706 miles per hour, relative to Earth.Zach Covey, a meteorologist for a local CBS affiliate in Florida, wrote on Twitter that if the meteor seen Monday was indeed 2021 GW4, it likely flew much closer to Earth's surface than what was originally expected. Covey said the asteroid made its closest approach of roughly 9,300 miles. He tweeted, "To put this in perspective, most close approach asteroids are between 1 and 3 millions miles from earth."Jonathan McDowell, an astronomer at the Center for Astrophysics, shared from his personal Twitter page, that the phenomenon seen in Florida had nothing to do with GW4. The Geostationary Lightning Mapper of the National Weather Service capturedthe bright meteor as it burned off the coast of Florida before moving on through space. Copyright 2021 NPR. To see more, visit https://www.npr.org.