SCIENCE

Gravitational lensing is amazing, but won’t solve the Hubble tension

The method you use to measure the expanding Universe determines which of two answers you’ll get. Lensed supernovae can’t resolve…

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Ask Ethan: Can we ever observe a proton decaying?

As the lightest baryon in the Universe, the proton is thought by many to be eternally stable. But if it…

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New discovery sets humanity up to image “alien Earth”

Finding alien Earths requires seeing Earth-sized planets at Earth-like distances from Sun-like stars. A new discovery completes the… Continue reading…

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The 9 biggest gaps in our understanding of cosmic history

Science has assembled an incredible story outlining our the Universe’s whole history. Despite its unrivaled success, 9 profound gaps… Continue…

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Ask Ethan: What’s the point of exploring the Universe?

There are so many problems, all across planet Earth, that harm and threaten humanity. Why invest in researching the Universe?…

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Supermassive black holes came before stars in ancient galaxies

Such massive, early supermassive black holes have puzzled astronomers for decades. At last, we’ve finally figured out how they form.…

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Ask Ethan: Is there really a “dark side” of the Moon?

One side of the Moon always faces us: the near side. The “dark side” of the Moon began as a…

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How are redshift, temperature, distance and time related?

Wavelengths stretch, distances grow, and temperatures cool as the Universe expands with time. How are the various cosmic parameters… Continue…

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