SCIENCE
-
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…
Read More » -
How the Milky Way-Andromeda merger became so uncertain | by Ethan Siegel | Starts With A Bang! | Jun, 2025
Back prior to 1923, no one knew whether Andromeda was a galaxy beyond the Milky Way or an object present…
Read More » -
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…
Read More » -
The mystery of neutrino mass is now smaller than ever | by Ethan Siegel | Starts With A Bang! | Jun, 2025
This image shows the inside of the spectrometer that’s part of the KATRIN experiment, which collects electrons and measures their…
Read More » -
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…
Read More » -
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…
Read More » -
10 space pictures whose appearances will deceive you | by Ethan Siegel | Starts With A Bang! | May, 2025
What appears to be a double-lobed nuclear explosion is actually the result of a rare astronomical outburst known as a…
Read More » -
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…
Read More » -
Astronomers just found the smallest galaxy ever | by Ethan Siegel | Starts With A Bang! | May, 2025
This map of stars in the vicinity of the identified object Ursa Major III/UNIONS 1 in two-dimensional space, with the…
Read More » -
Starts With A Bang podcast #117 — Gravitational waves and the Universe | by Ethan Siegel | Starts With A Bang! | May, 2025
The image above shows an illustration of the three future LISA, or Laser Interferometer Space Antennae, spacecrafts, in a trailing…
Read More »