SCIENCE
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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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780,000 galaxies revealed in JWST’s largest science operation | by Ethan Siegel | Starts With A Bang! | Jun, 2025
The COSMOS-Web survey, the largest cycle 1 General Observers JWST program, was proposed in 2021 (right) as a large-area survey…
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10 quotes about science’s value to society | by Ethan Siegel | Starts With A Bang! | Jun, 2025
December 25, 2021, the James Webb Space Telescope launched successfully into orbit from an Ariane 5 rocket. Rocketry has been…
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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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JWST won’t find the very first stars, but a new telescope can | 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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Ask Ethan: Was the Universe “timeless” before the Big Bang? | by Ethan Siegel | Starts With A Bang! | May, 2025
During cosmological inflation, the space contained in the inflationary region grows exponentially, doubling in all three dimensions with each tiny…
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JWST breaks its own record with new most distant galaxy MoM-z14 | by Ethan Siegel | Starts With A Bang! | May, 2025
This image shows a three-filter NIRCam view of galaxy MoM-z14: the new record holder (as of May 16, 2025) for…
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Ask Ethan: Could dark energy be more negative than a cosmological constant? | by Ethan Siegel | Starts With A Bang! | May, 2025
For the first several billion years of our Universe’s history, the Universe’s expansion rate was decreasing and distant galaxies slowed…
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The red color of Mars is mere inches deep | by Ethan Siegel | Starts With A Bang! | May, 2025
This sand dune, known as Dingo Gap, was crossed by Mars Curiosity in 2014. This image has been slightly ‘white…
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11 NASA astrophysics missions face risk of cancellation | by Ethan Siegel | Starts With A Bang! | May, 2025
To learn how galaxies grow and evolve over cosmic time, including an understanding of how gas infalls and gets expelled…
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