Mark Wolverton

Mark Wolverton is a science writer. His latest book, Burning the Sky: Project Argus, the Greatest and Most Dangerous Scientific Experiment in History, will be published this year.

Venus crossing the disk of the sun in 2012, as seen by the Japanese Hinode satellite.

Before Launching Probes to Venus, NASA Had to Figure Out Exactly Where It Was

The uncertainties of early space navigation led a young JPL engineer to launch the field of radar astronomy.

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