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I thought your article was somewhat misleading. It referred to dark energy as a “substance,” which it’s probably not, that’s “ripping the cosmos apart,” although this phrase implies far more violence than has been attributed to dark energy. And you described the findings as “wrenching” when, in fact, they all correlate with and confirm the increasingly mainstream viewpoint.

Ken Macleod
Irvine, Calif.

Theorists describe dark energy as a “fluid” pervading space. As far as findings in this area being wrenching, people are still surprised that the universe is revving up its expansion and don’t know what’s causing it .–R. Cowen