This massive blue star should have burnt out tens of millions of years ago, but it's still going strong. (sciencemag.org)
Over the course of tens of millions of years, however, all of the direct evidence of a civilization — its artifacts and remains — gets ground to dust. (sciencedaily.com)
In tens of millions of years, this will be swept away and only an open cluster of stars will remain. (sciencedaily.com)