The Bullet Cluster, the aftermath of a galaxy cluster collision that occurred 3.8 billion…
Category:
SCIENCE
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SCIENCE
Ask Ethan: Is it all-or-nothing for the expanding Universe? | by Ethan Siegel | Starts With A Bang! | Jul, 2024
At the start of the hot Big Bang, the Universe was rapidly expanding and…
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SCIENCE
How the Solar System led planet-hunters astray | by Ethan Siegel | Starts With A Bang! | Jul, 2024
What do planets outside our solar system, or exoplanets, look like? A variety of…
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SCIENCE
Ask Ethan: Why is it darker during Winter than Summer? | by Ethan Siegel | Starts With A Bang! | Jul, 2024
This panorama of three different sunrises: during Summer solstice (left), equinox (middle), and Winter…
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SCIENCE
The only two “arrows of time” we have don’t match | by Ethan Siegel | Starts With A Bang! | Jul, 2024
By examining this strobe image of a bouncing ball, you cannot tell for certain…
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There was a time where no starlight was visible throughout the entire cosmos. That…
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Gravitational waves carry enormous amounts of energy, but spread out quickly once they leave…
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Almost 100 years ago, an asymmetric pathology led Dirac to postulate the positron. A…
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The Universe’s history, from cosmic inflation to the Big Bang to the present, is…
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Known as hypervelocity stars, we originally thought just one would be ejected every 100,000…