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Stories, updates, insights, and original analysis from The Planetary Society.

Apophis is less scary than it used to be

Based on analyses of previously unstudied telescopic data, NASA scientists have released new predictions for the path of the 300-meter-diameter asteroid Apophis.

Reports from the 2009 AMASE Field Expedition

Now that it's high summer in the Arctic, it's time for research expeditions to swarm northward to explore icy landscapes as analogues to Mars and other far-off places.

Dunes in the Outback Red Center

Jani talks about the importance of understanding analogs we can easily visit on Earth to processes happening across the solar system.

Planetary Surface Processes Field Trip: Day 6

Today we visited Grand Falls and the nearby dune field. Grand Falls is especially interesting because it combines many of the processes that are active in shaping planetary surfaces.

Sands on Earth, Sands on Mars

One of the ways that planetary scientists try to understand the origin and evolution of landforms on other planets is by studying similar kinds of landforms or

Space weather affects everyday life on Earth

According to a press release issued this morning by the National Oceanic and Atmospheric Administration, the enormous solar flare that erupted on December 5 and 6 last year was accompanied by an intense radio burst that caused large numbers of Global Positioning System recivers to stop tracking the signal from the orbiting GPS satellites.

A debate about time

I received a press release in my inbox this morning that made me think. It came from the Royal Astronomical Society, and was titled

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