This last week in astronomy and physics seems really wild.

1. We still don’t know what’s causing the light fluctuation from Tabby’s star and the leading theory is a megastructure built by extraterrestrials

   Have we detected an alien megastructure in space? Keep an open mind • 2016 Aug 12 • Seth Shostak • The Guardian

2. There’s a weird trans-Neptunian object that orbits the sun in a totally different orbital plane than every other known object in the solar system, suggesting that our theories on how the solar system came to be might be off

   Scientists Just Discovered a Mysterious Object Beyond Neptune • 2016 Aug 12 • Kelly Dickerson • Mic

3. Physicists put a muon in orbit around a deuterium nucleus and there’s nothing in existing quantum theory that explains why the proton charge radius would vary

   Researchers orbit a muon around an atom, confirm physics is broken • 2016 Aug 11 • John Timmer • Ars Technica

4. There might be a fifth force.

   Physicists confirm possible discovery of fifth force of nature • 2016 Aug 15 • Phys.org