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Ask Ethan: What were the “dark ages” of the Universe?

Ask Ethan: What were the “dark ages” of the Universe?

The hot Big Bang was an energetic, brilliantly luminous event. Today’s Universe is alight with stars. But in between, the dark ages ruled.
Go to the profile of Ethan Siegel
Ethan Siegel
Pulsars, not dark matter, explain the Milky Way’s antimatter

Pulsars, not dark matter, explain the Milky Way’s antimatter

An enormous amount of antimatter is coming from our galactic center. But the culprit probably isn’t dark matter, but merely neutron stars.
Go to the profile of Ethan Siegel
Ethan Siegel
JWST’s first triple-image supernova could save the Universe

JWST’s first triple-image supernova could save the Universe

Named “Supernova H0pe,” it shows how JWST plus gravitational lensing can be used to solve the greatest puzzle facing astronomy today.
Go to the profile of Ethan Siegel
Ethan Siegel
October 14, 2023’s annular eclipse will have huge consequences 6 months later

October 14, 2023’s annular eclipse will have huge consequences 6 mo...

An annular eclipse is coming to Earth on October 14, 2023. Six months later, a total solar eclipse is headed our way. Here’s the reason…
Go to the profile of Ethan Siegel
Ethan Siegel
JWST reveals dusty secrets inside spiral galaxies

JWST reveals dusty secrets inside spiral galaxies

How does star-formation, occurring in small regions within galaxies, affect the entire host galaxy that contains it? JWST holds the…
Go to the profile of Ethan Siegel
Ethan Siegel
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