Why is Saturn the youngest?

A number of mysteries including why Saturn appears to be much younger than the rest of the planets may soon be resolved. Gilbert Collins and his colleagues at the Lawrence Livermore National Laboratory in California, USA, are working to unearth the reality. They have conducted studies with vast quantities of mangled metals to determine how deuterium and hydrogen behave in a hot, pressurised interiors of giant planets. Collins says the work holds tremendous importance as it may be instrumental in answering basic questions about condensed matter.