heavier object had to be spinning,” said Isi. Previous events had left researchers baffled: observations of black holes in the Milky
Way suggested that black holes should have high spins, but this did not show up in gravitational-wave data from the first two
Astrophysicists hope that detecting spins can shed light on how the black holes formed and came to orbit each other. The
richer 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The LIGO–Virgo collaboration will continue to publish more results from its vast trove of unpublished data, including
individual events that are particularly interesting or exciting, says Virgo’s Jo van den Brand, a physicist at the National Institute
for Subatomic Physics in Amsterdam. “I think the harvest is quite good, let me put it like that.”
(Adapted from https://www.scientificamerican.com/article)
【題組】30. What can we infer from the passage?
(A)The renovation of the Palace of Westminster is processing well because of Brexit.
(B) The restoration will start before 2025 against all odds.
(C) Piper thinks that the House of Parliament is safe so far.
(D)There might be a change in the plan of renovation.