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Surprising Water Found on Inner Solar System Objects

Recently-visited objects in the inner solar system show evidence of water ice or volatile materials.

Natural Sources of Methane Surprise Climate Scientists

Methane is 30 times more potent than carbon dioxide as a greenhouse gas. Look where it comes from.

NASA Verdict: Most Exoplanets Are Not Habitable

Superflares from the majority of stars would likely sterilize any planet in its "habitable zone."

Latest Evidence that Saturn and Its Rings Are Young

A new set of post-Cassini papers has to deal with observational facts: Saturn's rings cannot last billions of years.

Pluto Rivals Earth in Geological Complexity

Call it what you will, Pluto is a planet of surprises. Its active geology is second only to Earth's, say two planetary scientists.

Mars Is Losing Its Atmosphere Fast

Measurements of Martian atmospheric loss rates imply incredible changes over the assumed billions of years of Mars' history.

Why Milankovitch Cycle Theory Is Like Astrology

Sometimes a hunch proves to be unworkable. The Milankovitch Cycle theory has too many complications. It’s time to give it up. In the 1920s, Milutin Milankovitch, a Serbian astronomer, mathematician and popularizer of science, had a bright idea. Knowing that certain orbital cycles drift over time, he wondered if they could influence the earth’s climate. […]

Bugs Ride on the Wings of the Wind

Small animals can take advantage of wind to go long distances in remarkable ways.

Climate Science Underestimates Natural Sources of Warming

Scientists discover two more potent sources of greenhouse gases, both of which have nothing to do with human activity.

Van Allen Belts Protect Earth from Solar Wind

Geophysicists are still puzzling over how the earth's magnetic field and Van Allen radiation belts protect the surface from deadly particles in the solar wind.

Our Solar System Appears Odd to Astronomers *

Our solar system is an oddball, conclude astronomers who looked at hundreds of planetary systems around other stars. *Audio version available.

Lightning Can Produce Carbon-14

In a surprise announcement, Japanese researchers found that lightning bolts can be powerful enough to cause nuclear fission, leading to new isotopes— including carbon-14.

Facing Reality About Life on Other Planets: Moon, Atmosphere, and Mass

This is part 3 of Dr Henry Richter's discussion on the requirements for life to exist on a planet elsewhere in the universe.

Habitability Requires the Right Kind of Star

This is a continuation of my discussion on the requirements to allow life to exist on a planet elsewhere in the universe.

Life Helps Protect the Planet

When humans make a mess of things, our fellow organisms try to help. That's no excuse for our failures to be good stewards.
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