How do atoms form? A physicist explains where the atoms that make up everything around come from

Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...
Astronomy

My astronomy book reads, “Heavy-element fusion in massive stars ends with iron.” How are elements heavier than iron in the periodic table created?

Neutron capture in iron nuclei occurs in high-energy environments such as supernovae. Neutron capture results in the conversion of a neutron into a proton, an electron, and an antineutrino. This ...
Forbes

Ask Ethan: Can Normal Stars Make Elements Heavier (And Less Stable) Than Iron?

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. There are some 90+ elements of the periodic table that occur naturally ...
Physics World

Could lasers synthesize heavy elements produced in neutron-star mergers?

The experimental campaign on the neutron generation at Apollon: The inside of the target chamber showing the off-axis parabola and some diagnostics. (Courtesy: Julien Fuchs) An astrophysical process ...
Physics World

Photon collisions in dying stars could create neutrons for heavy elements

Heavy duty A high-energy photonic jet (white and blue) blasts through a collapsing star with a black hole at its centre. The cocoon where free neutrons may be available for the r-process is shown in ...