How Fast Is the Universe Really Expanding?
SMRTR summary
The universe's expansion rate remains one of cosmology's biggest unsolved puzzles. Since the 1990s, scientists have known the expansion is accelerating — not slowing — and dark energy was proposed as the driving force, but measuring exactly how fast remains deeply contested among astronomers today.
SMRTR provides this summary for quick context. The original article belongs to Quanta Magazine.
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