Best of Last Week—Alternate theory of gravity, automated restroom cleaning, Martian meteorite mystery solved - Science X

It was a good week for physics research as an international team of astrophysicists made observations of star clusters that were consistent with the predictions of an alternative theory of gravity—cIt was a good week for physics research as an international team of astrophysicists made observations of star clusters that were consistent with the predictions of an alternative theory of gravitycal?