WASHINGTON, Jan 29 (Reuters) –
The discovery of an asteroid the size of a small shipping truck mere days before it passed Earth on Thursday, albeit one that posed no threat to humans, highlights a blind spot in our ability to predict those that could actually cause damage, astronomers say.Sign up to receive daily headline news from Ottawa Citizen, a division of Postmedia Network Inc.By clicking on the sign up button you consent to receive the above newsletter from Postmedia Network Inc.
But with current capabilities, astronomers can’t see when such a rock targets Earth until days prior. Some astronomers consider relying only on statistical probabilities and estimates of asteroid populations an unnecessary risk, when improvements could be made to NASA’s ability to detect them. “With Surveyor, we’re really focusing on finding the one asteroid that could cause a really bad day for a lot of people,” said Amy Mainzer, NEO Surveyor principal investigator. “But we’re also tasked with getting good statistics on the smaller objects, down to about the size of the Chelyabinsk object.”
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