Part of the Linac 4 booster at CERN, as seen on May 9 in Meyrin, near Geneva. The booster will allow the LHC to reach higher luminosity in the next few years.
Fabrice Coffrini/AFP/Getty Images
This stone marten knocked out power to the $7 billion Large Hadron Collider particle accelerator in November 2016 when it touched a 18,000-volt transformer.
Natural History Museum Rotterdam
Don't panic! The end of the Universe (as we know it) isn't likely to hit us for billions of years, if it comes at all. Pictured: the Milky Way rises above the ESO's ALMA facility in Chile.
José Francisco Salgado/ESO