SCIENCE
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Ask Ethan: Is the Hubble tension a real problem? | by Ethan Siegel | Starts With A Bang! | Jun, 2025
The construction of a cosmic distance ladder begins with measuring the parallax of individual stars within the Milky Way and…
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ANITA did see weird particles, but not parallel Universes | by Ethan Siegel | Starts With A Bang! | Jun, 2025
In inflationary cosmology, the volume that space occupies is stretched to an inconceivably large volume in a tiny fraction of…
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Could supermassive black holes anchor the tiniest galaxies? | by Ethan Siegel | Starts With A Bang! | Jun, 2025
At the centers of galaxies, orbiting stars experience close interactions with the central supermassive black holes at a galaxy’s core.…
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Ask Ethan: Does cosmic inflation violate energy conservation? | by Ethan Siegel | Starts With A Bang! | Jun, 2025
When the Universe undergoes a period of cosmic inflation, the fabric of space — which has a tremendously high energy…
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Astronomers close in on the source of the highest energy particles | by Ethan Siegel | Starts With A Bang! | Jun, 2025
When high-energy cosmic particles strike the top of Earth’s atmosphere, they produce showers of “daughter” particles that will find their…
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Ask Ethan: What are the “first stars” in the Universe? | by Ethan Siegel | Starts With A Bang! | Jun, 2025
An illustration of the first stars turning on in the Universe. Without metals to cool down the clumps of gas…
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Anomaly no more! “Muon g-2” puzzle resolved at last | by Ethan Siegel | Starts With A Bang! | Jun, 2025
This overhead image shows the Muon g-2 experiment at Fermilab, where powerful accelerators create muons that are guided into this…
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Ask Ethan: What would the Universe be like without dark matter? | by Ethan Siegel | Starts With A Bang! | Jun, 2025
A 3D map of the dark matter distribution in the cosmos. By measuring the average shape of galaxies throughout the…
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How fast does planet Earth move through space? | by Ethan Siegel | Starts With A Bang! | Jun, 2025
The Earth rotates on its axis and revolves around Sun, which in turn orbits around the galactic center at speeds…
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A quantum miracle enabled the formation of neutral atoms | by Ethan Siegel | Starts With A Bang! | May, 2025
Today, the Universe has evolved into the complex, life-friendly place we know it to be because we were able to…
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