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Contents
- Mystery Meteorite: The case for (and against) a rock from Mercury
- Hard Times for Theorists in a Post-Higgs World: The Large Hadron Collider’s big success leaves no clear avenue for new physics
- In the Eye of the Tiger: Global spread of Asian tiger mosquito could fuel outbreaks of tropical disease in temperate regions
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- Cool Jobs: Moved by life: Biologically inspired robots travel — naturally
- Infection time: Disease is more severe when it hits in the morning, at least in mice
- Explainer: Our bodies’ internal clocks: Biological clocks determine hunger, sleepiness and other daily rhythms
Hit-and-run
View Video | Quaoar is an oddball in the belt because of its rocklike density. In one formation scenario, Quaoar could have hit a bigger Pluto-sized body at high speeds and ricocheted off instead of sticking. This may have stripped away Quaoar's outer, fluffy layers.
Credit: Craig Agnor, E. Asphaug
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