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Surprising Youth in the Solar System

Four solar system objects in the news look young, not billions of years old.

Want Salt on Your Ceres?

Those mysterious white spots on asteroid Ceres could be outcrops of salt. How did vast amounts of salt get out there?

Pounding Headaches for Solar System Dates

It's hard to tell when things crashed into each other.

Seriously, Ceres and Comets Look Surprising

Here are surprises found at asteroid Ceres and Comet 67P by spacecraft arriving there this year.

Solar System Puzzles Needing Explanation

Here are some of the latest observations that are baffling planetary scientists.

It's Curtains for Enceladus

The geysers of Saturn's little moon are like sheets instead of jets, spelling trouble for theories of its ancient age and possible life.

Water Worlds Tempt with Life, Not Youth

More and more planets and moons are suspected of having liquid water, but what should be the logical implications?

Solar System Reversals

The planets keep going around, but theories about them often stop and go backward or sideways. When nothing else works, send in the impactors!

Mercury, Moon May Still Be Erupting

Two objects that should be old and dead show surprising activity. Other indications of youthfulness in the solar system are noted.

Another Geyser World Erupts: Asteroid Ceres

The asteroid Ceres is popping off with water vapor on two sides. What's that world coming to? One thing is sure: DAWN is coming to it.

New Worlds

Members of our solar system that were little more than points of light for decades or centuries have now become familiar family members, seen up close and personal by spacecraft. Here are introductions to three worlds that are no longer mere names in a catalog. Even the names of members in this trio may be unfamiliar to some. They’re worth getting to know.
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