Space
Physicists may have finally glimpsed elusive dark matter
For decades scientists have been trying to detect this invisible substance that fills the cosmos. The LZ experiment may have finally spied it.
HS-PS1-8
Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.
More Stories in HS-PS1-8
- Animals
Radioactive animals don’t glow — but do show the power of radiation
Wild species exposed to nuclear contamination help show how radiation affects living things — including its risks to people.
- Archaeology
Knotted strands of 500-year-old hair tell a surprising story
Used in a device called a khipu, the hair reveals the owner’s simple diet. Those data now suggest that in Incan society, even some commoners kept records.
- Chemistry
Scientists Say: Nucleosynthesis
For this nuclei-forging cosmic process, the Big Bang was just a way to get started.
- Physics
Weirdly, mayo can help study conditions ripe for nuclear fusion
Yes, mayo. The texture of the sandwich spread is perfect for mimicking what a fusion fuel capsule goes through when blasted with lasers.
- Archaeology
Iron Age grave in England points to a possible woman warrior
The grave holds a sword. It hints the buried woman fought or helped plan raids some 2,000 years ago in what’s now southwest England.
- Physics
In a breakthrough experiment, fusion gave off more energy than it used
The sun creates energy through nuclear fusion. Now scientists have too. This achievement raises hopes for developing a new type of clean energy.
- Physics
Scientists Say: Fusion
Nuclear fusion is the physics that powers the sun and could someday provide abundant clean energy on Earth.
- Physics
Scientists Say: Fission
Nuclear fission is the process of splitting atoms apart to release huge amounts of energy.
- Physics
Explainer: Radioactive dating helps solve mysteries
Knowing the decay rate of radioactive elements can help date ancient fossils and other artifacts.
