Why dangerous asteroids heading to Earth are so hard to detect
- Written by Jonti Horner, Professor (Astrophysics), University of Southern Queensland
How close can a potentially dangerous asteroid get before it's detected?Shutterstock/Alexyz3d
Earth is often in the firing line of fragments of asteroids and comets, most of which burn up tens of kilometres above our heads. But occasionally, something larger gets through.
That’s what happened off Russia’s east coast on December 18 last...
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