Photo of the week

A MQ-4C Triton unmanned aircraft system makes its approach for landing March 13 at Palmdale, Calif., marking the conclusion of initial flight testing.

Image credit: Alan Radecki/Northrop Grumman

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Why Hasn’t Commercial Air Travel Gotten Any Faster Since the 1960s?

The short answer is that fuel economy trumps speed.

Source: Wikipedia (released to the public domain)

Skydiving from outer space

Felix Baumgartner ascended more than 24 miles above Earth’s surface to the edge of space in a stratospheric balloon, the Red Bull Stratos. Millions across the globe watched as he opened the door of the capsule, stepped off the platform, and broke the speed of sound while free falling safely back to Earth.