Density Can't Keep Saturn's Rings Old
February 4, 2016
Saturn's B ring is much less dense than previously thought, challenging attempts to keep it billions of years old.
Cassini Plunges Through Enceladus Geyser, and Other Saturn News
October 29, 2015
Yesterday's daring plunge through a plume of an Enceladus geyser is the highlight of recent Saturn news.
August 8, 2015
Cassini keeps revealing puzzling phenomena in the Saturn system that challenge traditional theories and date estimates.
Saturn Rescues Earth: Outer Planet Wonders
November 22, 2014
How Saturn saved the Earth, and other news from the ringed planet, its family, and other bodies in the outer solar system.
Mercury, Moon May Still Be Erupting
October 17, 2014
Two objects that should be old and dead show surprising activity. Other indications of youthfulness in the solar system are noted.
Of Planets and People
September 29, 2014
Here's a quick tour of the planets to see what's newsworthy.
Are Saturn’s Rings Evolving?
July 10, 2010
Can ring particles grow into moons? And is that how planets grew from rings around stars?