heavier object had to be spinning,” said Isi. Previous events had left researchers baffled: observations of black holes in the MilkyWay suggested that black holes should have high spins, but this did not show up in gravitational-wave data from the first tworuns.Astrophysicists hope that detecting spins can shed light on how the black holes formed and came to orbit each other. Thericher information in asymmetrical mergers helps to measure an event’s distance from the Milky Way with better precision.Accumulating many such measurements could provide a new way to map the history of expansion of the Universe.The LIGO–Virgo collaboration will continue to publish more results from its vast trove of unpublished data, includingindividual events that are particularly interesting or exciting, says Virgo’s Jo van den Brand, a physicist at the National Institutefor Subatomic Physics in Amsterdam. “I think the harvest is quite good, let me put it like that.”(Adapted from https://www.scientificamerican.com/article)
26. What is the main idea of the article?
(A) The problems the Palace of Westminster are facing.
(B) The cause and effect of Notre Dame fire.
(C) The reasons why British lawmakers are unwilling to leave the House of Parliament.
(D) The history of the Palace of Westminster.