SCIENCE
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“One bad measurement” ruled out as Hubble tension explanation
The distance ladder and the CMB give incompatible values for the expansion rate. A new study shows just how robust…
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Ask Ethan: How did Artemis II break Apollo’s distance record?
Human beings have now traveled farther from Earth than ever before with Artemis II’s flyby of the lunar far side.…
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Astronomers just found the most pristine star of all-time
The 1st generation of stars formed, lived, and died very early on. But 2nd generation stars could still persist today.…
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Ask Ethan: Do gravitational waves redshift like light does?
As light travels across the Universe, it’s subject to cosmic expansion, changing fields, and relative motion. How about gravitational… Continue…
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The flimsy case for evolving dark energy
Is dark energy evolving with at least 99.99% confidence? Despite the quality of recent data, scientists have every reason to…
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Ask Ethan: Does dark energy curve the Universe over time?
Early on, the Universe needed near-perfect flatness, or atoms, stars, and galaxies couldn’t form. What happens once dark energy takes…
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The widely reported “hole in the Universe” is a lie
The image you’re seeing isn’t a hole in the Universe, and the cosmic voids that do exist aren’t hole-like at…
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Simply looking up inspires scientific exploration
Looking up at the night sky gives us a glimpse of the Universe beyond our terrestrial concerns. Here’s the science…
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Ask Ethan: Does nature need to obey laws at all?
No matter what physical system we consider, nature always obeys the same fundamental laws. Must it be this way, and…
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Einstein showed space can curve, but data reveals a flat Universe
In theory, the fabric of space could have been curved in any way imaginable. So why is the Universe flat…
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