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Space Flight at 50: The Journey Continues

Out of This World Photo Gallery

Despite budget cuts, scientific research continues into outer space

space exploration - NASA Stereo probe spacecraft

Twin STEREO probes. — NASA

9. STEREO Probes

Here comes the sun! In February, NASA's twin STEREO probes began beaming back images taken from opposite sides of our star, providing the first-ever 360-degree views. Observing the full sun will enable scientists to develop an alert system for events called coronal mass ejections, eruptions that interfere with Earth's satellites and power grids.

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