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...
dynamic rings system youthful
The new discoveries demonstrate that Uranus has a youthful and dynamic system of rings and moons.
clue dynamic expect nobody rings system until youthful
The new discoveries dramatically demonstrate that Uranus has a youthful and dynamic system of rings and moons. Until now nobody had a clue the rings were there, we had no right to expect them.
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.
consistent
Everything we find now is consistent with that conclusion.
chaotic disruptive solar systems
Uranus is one of the most chaotic and disruptive systems in the solar system.