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Ceres Looks Seriously Young

Asteroids should not be so active. This one was, and is.

Ceres Is Young

Dawn Mission scientists were surprised to see this asteroid (dwarf planet Ceres) with a water cycle and evidence of rapid geological changes.

Dawn of a Young Ceres

The largest asteroid has a problem: she's too young to get a date.

Why Astronomers Hammer Planets

Secular planetary scientists have a skeleton key that unlocks any planetary mystery: the BFH.

Juno How Old the Solar System Is?

Everyone knows the solar system is 4.5 billion years old. Everyone, that is, except Nature herself.

Titan Ethane Still Missing, and Other Planetary Puzzles

We update the problem of Titan's missing ethane and other challenges to billions of years.

Solar System Puzzles Needing Explanation

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

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!

Planets and Moons Beneath the Surface

Can science peel back the surfaces of objects to see what's underneath? Can they go under the observations to find the explanations?

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.

Planetary Eruptions

Eruptions can come in two types: literal and figurative. Some planetary bodies are literally erupting. Others are causing figurative eruptions in theories. Here are some recent news stories about planets, moons, comets and other objects circling our sun and other stars. There hasn’t been much news from Mercury or Venus this month, so we’ll start on the home planet and work outward.
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