How to spot comets that can impact Earth? Look at the t(r)ail, scientists suggest
Comets are common in the universe, but not a lot of them are frequent visitors to our solar system. Those that do take the ...
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'Crumb trails' of meteoroids could reveal potentially dangerous comets years before they reach Earth
Potentially dangerous comets could be spotted many years in advance by following the meteoroid trails they leave near Earth, ...