Society for Science and the Public
Science News for Students: The Hottest Soup in New York
Describes scientific research completed at the highest temperature ever recorded, 4 trillion degrees Celsius. This research could further understanding of the origin of the universe.
Other
American Institute Physics: Quark Stars
Collapsed stars, between white dwarfs and black holes, can be studied as quark-gluon masses, or quark-hyperon groups. Extreme pressures lead to extreme states.