AI Insight
Scientists at Southwest Research Institute have developed a method using argon-40 isotope measurements to determine whether Uranus and Neptune's interiors are primarily composed of ice or rock. By analyzing the atmospheric argon-40 levels of these ice giants, researchers can estimate the amount of rock beneath their surfaces. This approach provides new insights into how and where these distant planets formed in our solar system.
Why it matters
Understanding the internal composition of Uranus and Neptune helps scientists refine models of planetary formation and evolution in our solar system. This knowledge could improve our ability to characterize similar exoplanets discovered around other stars and enhance our understanding of how ice giant planets develop in different stellar environments.
Understand the Science
Measurements of an argon isotope could help scientists understand whether the interiors of Uranus and Neptune, our solar system’s so-called ice giants, are dominated by ice or rock. New research led by Southwest Research Institute (SwRI) and published in The Planetary Science Journal measured the planets’ atmospheric argon-40 to estimate the amount of rock found beneath their surfaces and search for clues about the planets’ origins, including where and how they formed.
Source: Argon on Uranus and Neptune may reveal more about their origins than their interiors