NASA ran the world's most dramatic roleplay, simulating what would happen if a dangerous asteroid were spotted on a collision course with the planet.
What would happen if a huge asteroid were headed toward Earth? Though this might be the topic of innumerable Hollywood movies, it’s also a real concern for space agencies like NASA and its Planetary Defense Coordination Office.
Recommended Videos One of the challenges of this exercise was that it wasn’t known what the size or composition of the asteroid was, making it harder to predict how effective any intervention might be. This simulates some of the challenges of real asteroid detection, as information on trajectory, shape, mass, and composition isn’t always known as the same time. There are also challenges in observing asteroids as they pass behind the sun and can be impossible to observe for months at a time.
NASA stresses that there are currently no known asteroids that threaten Earth, though it is important to be prepared if such a scenario were ever to occur. The further in advance an asteroid were to be identified, the more time is available to mount a response.
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NASA's TESS exoplanet-hunter finds tantalizingly close Earth-size world with moderate temperatureRobert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
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