New scaling law predicts how wheels drive over sand

When engineers design a new aircraft, they carry out much of the initial testing not on full-sized jets but on model planes that have been scaled down to fit inside a wind tunnel. In this more manageable setting, they can ...

Dawn observing Ceres; third reaction wheel malfunctions

NASA's Dawn spacecraft is preparing to observe Ceres on April 29 from an "opposition" position, directly between the dwarf planet's mysterious Occator Crater and the sun. This unique geometry may yield new insights about ...

Microscopic molecular cars to race in France

Microscopic molecular vehicles piloted by chemists and physicists will line up in the world's first nano-car race in France this month—but don't expect to see anything with the naked eye.

Breaks observed in Mars rover wheel treads

A routine check of the aluminum wheels on NASA's Curiosity Mars rover has found two small breaks on the rover's left middle wheel—the latest sign of wear and tear as the rover continues its journey, now approaching the ...

The rise of self-driving cars

Once the stuff of science fiction, self-driving cars may soon be cruising our nation's roadways. Federal and state authorities are rushing to keep up with this rapidly advancing technology. The U.S. Department of Transportation ...

Swedish student startup gets deal to build electric cars

A group of Swedish university students that raised 1.2 million euros ($1.3 million) in crowdfunding for their startup to build electric cars has caught the attention of German industrial heavyweight Siemens.

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