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2026
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Source-derived question
What is a kilonova, and what did its spectrum reveal about heavy-element formation?
Big Bang Theory
Gravitational Waves
Supernovae
Sources that address it
GW170817: first multi-messenger observation of a neutron-star merger
almanac
Related questions
How did astronomers use Type Ia supernovae to measure the expansion rate of the universe?
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What did both the Supernova Cosmology Project and the High-Z Supernova Search Team find when they measured distant supernovae?
Why are Type Ia supernovae useful as 'standard candles' for measuring cosmic distances?
Why did the 1983 Physics Prize pair a theory of stellar collapse with a theory of element formation?
How bright did Nova Aquila 1918 become, and how did that compare to previous novae like Kepler's star?
How closely did the observed decay of PSR B1913+16's orbit match Einstein's prediction?
How cold is the afterglow of the Big Bang today, and why has it cooled so much?