SCIENCE
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A quirk of relativity is the closest thing to achieving immortality
Nothing lives forever, at least, not in the known Universe. But relativity allows us to get closer than ever: from…
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JWST peers inside a dying star’s “exposed cranium”
Resembling a cosmic brain, the exposed cranium nebula instead shows a dying, massive star, as JWST reveals. Its fate remains…
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Ask Ethan: Do signals degrade as they travel through space?
In traveling through the expanding Universe, particles slow down while light and gravitational waves redshift. What degrades and what… Continue…
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Did Hubble’s new “dark galaxy” kill modified gravity?
The discovery of CDG-2, a galaxy that’s more than 99.9% dark matter, could reveal a new population of ultra-faint galaxies.…
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Ask Ethan: Can quantum entanglement survive a black hole?
Quantum entanglement links information between particles across space and time. So what happens when one of them falls into a…
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How Einstein revolutionized the meaning of “where” and “when”
Even space and time are relative in Einstein’s universe. That means our old notions of “where” and “when” no longer…
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Ask Ethan: Will anything persist when the Universe dies?
This illustration shows a spacetime grid where the grid is being dragged due to rotation, but where expansion farther out…
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The Big Bang’s final and most difficult prediction: confirmed
At the high temperatures achieved in the very young Universe, not only can particles and photons be spontaneously created, given…
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What are the most energy-efficient reactions in physics?
As long as there are still interactions occurring between objects in space, including gravitational collapse, nuclear transitions, stellar cataclysms, and…
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Ask Ethan: Can we see the expanding Universe changing?
At the start of the hot Big Bang, the Universe was rapidly expanding and filled with high-energy, very densely packed,…
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