neutrons
Understanding the Early Universe Depends on Estimating the Lifespan of Neutrons
A study of how neutrons decay could give us a better understanding of the big bang.
Best NASA Images Yet Of Ceres’ Brightest Spot
New images from NASA's Dawn spacecraft reveal spectacular new details in Ceres' intriguing "bright spots".
What is the Higgs Boson?
What is this thing we keep hearing about - the Higgs Boson, and why is it important? (more…)
Astronomy Cast Ep. 395: The Standard Model – Baryons and Beyond
In the last few episodes, we’ve been talking about the standard model of physics, explaining what everything is made up…
Astronomy Cast Ep. 393: The Standard Model – Leptons & Quarks
Physicists are getting a handle on the structure of the Universe, how everything is made of something else. Molecules are…
Astronomy Cast Ep. 392: The Standard Model – Intro
Humans, cars and planets are made of molecules. And molecules are made of atoms. Atoms are made of protons, neutrons…
Astronomy Cast Ep. 378: Rutherford and Atoms
Physicists knew the interior of the atom contained protons, neutrons and electrons, but they didn't understand exactly how they were…
Why Can’t We See the Big Bang?
Since telescopes let us look back in time, shouldn't we be able to see all the way back to the…
Astronomy Cast 323: Isotopes
The number of protons defines an element, but the number of neutrons can vary. We call these different flavors of…