There are pods of whales and gaggles of geese. Now astronomers are wondering which plural term would best suit the most enigmatic entity in the cosmos.

Each day we gather at 2 p.m. E.D.T. to review all the weather and readiness at the sites, then make the call, Dr. Doeleman said in an email. Sometimes its a piece of cake: good weather, everyones ready. Or, just as clear, weather at key sites is awful or there is a major technical issue to be run down. Some of the time its pure agony.
If you dont have a rocket or a telescope, theres plenty new to read about black holes. Hawking Hawking: The Selling of a Scientific Celebrity, by Charles Seife, is an unvarnished look at the cosmologist and black-hole expert Stephen Hawking, who died in 2018. The book, rich in reporting about Dr. Hawkings breakthroughs and his life (and written in reverse chronological order), seeks to separate the man and his science from the Einstein-like aura of sagacity that he let envelope his public persona.
And Black Hole Survival Guide, by Janna Levin, an astrophysicist at Barnard College of Columbia University, and illustrated by artist Lia Halloran, is a pocket-size tone poem to these cosmic curiosities.