SCIENCE
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The Moon’s two faces don’t match, and we think we know why
The far side of the Moon is incredibly different from the Earth-facing side. 66 years later, we know why the…
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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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Ring galaxies, the rarest galaxy type of all, are finally understood
Spirals, ellipticals, and irregulars are all more common than ring galaxies. At last, we know how these ultra-rare objects are…
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Astronomy’s first gap-clearing planet fills in our “missing link” | by Ethan Siegel | Starts With A Bang! | Nov, 2025
Press enter or click to view image in full size This composite image of the WISPIT 2 system, including exoplanet…
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Starts With A Bang podcast #123 — Alien physics | by Ethan Siegel | Starts With A Bang! | Nov, 2025
Press enter or click to view image in full size This image shows the cover of Dr. Daniel Whiteson’s and…
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How to understand Einstein’s relativity without math | by Ethan Siegel | Starts With A Bang! | Nov, 2025
Press enter or click to view image in full size The longer a photon’s wavelength is, the lower in energy…
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Ask Ethan: Could evolving dark energy lead to a Big Crunch? | by Ethan Siegel | Starts With A Bang! | Nov, 2025
Press enter or click to view image in full size The far distant fates of the Universe offer a number…
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Groupthink in science isn’t a problem; it’s a myth | by Ethan Siegel | Starts With A Bang! | Nov, 2025
Press enter or click to view image in full size The Solar System formed from a cloud of gas, which…
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Where does the expanding Universe begin? | by Ethan Siegel | Starts With A Bang! | Nov, 2025
Press enter or click to view image in full size This large-field, 2014-era composite Hubble image of the colliding galaxy…
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Ask Ethan: Why couldn’t the Universe have expanded forever? | by Ethan Siegel | Starts With A Bang! | Oct, 2025
Press enter or click to view image in full size There is a large suite of scientific evidence that supports…
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