Mark Showalter
Mark Showalter
Mark Robert Showalteris a Senior Research Scientist at the SETI Institute. He is the discoverer of six moons and three planetary rings. He is the Principal Investigator of NASA's Planetary Data System Rings Node, a co-investigator on the Cassini–Huygens mission to Saturn, and works closely with the New Horizons mission to Pluto...
decade dust lasts ring sort unless year
That's sort of mysterious. A dust ring lasts a year or two, or a decade at most unless it's continuously replenished.
dynamic evidence solar somewhere system
It is more evidence that our solar system is a dynamic place, somewhere very active.
chaotic disruptive solar systems
Uranus is one of the most chaotic and disruptive systems in the solar system.