The following article describes a study calling into question one experiment upon which the notion of dark energy is based:
http://www.csmonitor.com/Science/2016/1023/Is-dark-energy-a-real-thing-Maybe-not-new-study-suggests Also of interest, two articles discussing a study that says that the rotation of spiral galaxies does not seem to require dark matter (not sure whether these have been mentioned before): http://phys.org/news/2016-09-spiral-irregular-galaxies-current-dark.html https://www.sciencedaily.com/releases/2016/09/160921085052.htm Eric
