Yeah, not really. With the current state of various spaceguard projects working on mapping NEOs (near-Earth objects), the estimated "heads up time" for an extin

Yeah, not really. With the current state of various spaceguard projects working on mapping NEOs (near-Earth objects), the estimated "heads up time" for an extinction level asteroid impact is on the order of decades. The smaller the object, the less notice we get, but the risk also decreases dramatically.