The strangest star in the Universe has suddenly kicked into gear again, with researchers reporting that its light has started dimming in bizarre ways - just like it did two years ago when it baffled scientists with its irregular light emissions.
This time around, we get to watch the investigation in action, because over the weekend, astronomers started freaking out on Twitter, telling everyone with a telescope big enough to train in on the star and help them figure out what's actually going on here.
"As far as I can tell, every telescope that can look at it right now is looking at it right now," astronomer Matt Muterspaugh from Tennessee State University told Loren Grush at The Verge.
First discovered in 2009, the 'alien megastructure' star - known officially as KIC 8462852, or Tabby's star - is located about 1,500 light-years away, between the Cygnus and Lyra constellations of the Milky Way galaxy.
In late 2015, a team of astronomers led by Tabetha Boyajian from Yale University noticed something peculiar - a strange pattern of light surrounding the star that to this day, no one's been able to explain.