In our roundup of travel stories this week: a man recreates his father’s round-the-world bicycle trip, a luxury yacht that turned out to be a mold-covered wreck, plus the ancient Roman city 10 times ...

Let's just call it the alien megastructure that wasn't. More than 100 researchers have released a study showing that the mysterious star KIC 8462852, better known as Tabby's Star, is almost certainly ...

There are three ways to look for evidence of alien technological civilizations. One is to look out for deliberate attempts by them to communicate their existence, for example, through radio broadcasts ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Three hundred and ninety parsecs away from Earth, a star dimmed in ...

Researchers have noted that planet-sized (or larger) artificial structures could be discovered with Kepler as they transit their host star. Jason Wright and other astronomers present a general ...

A mysterious star whose repeated bouts of darkening might be due to "alien megastructures," according to some researchers' conjectures, may now have more than a dozen counterparts that display ...

How do you explain an outer space discovery that confounds even astronomers? Blame it on aliens. At least that often seems to be the first reaction when such mysteries arise. KIC 8462852 was first ...

This illustration shows a star behind a shattered comet. (Credit: NASA / JPL-Caltech) That mysterious “alien megastructure” star is still a mystery, but the most plausible explanations appear to be ...