The Hubble telescope has shifted into one-gyro mode after months of technical issues − an aerospace engineering expert explains

By Panagiotis Tsiotras, Professor of Aerospace Engineering, Georgia Institute of Technology

Imagine keeping a laser beam trained on a dime that’s 200 miles away. Now imagine doing that continuously for 24 hours, while riding a merry-go-round. Seem difficult? Well, that’s basically what the Hubble Space Telescope does.

After months of technical issues, NASA announced June 4 that Hubble would shift into one-gyroscope mode. This essentially means that the telescope will have to rely on just one of the several gyroscopes – devices that measure an object’s orientation…

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