Hubble entered safe mode on April 23, but NASA reports the telescope is still in "good health." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

NASA's Hubble Space Telescope, a cornerstone of astronomical research for over three decades, is transitioning to a one-gyroscope operational mode following a series of technical issues (via Gizmodo).

Researchers have built a prototype fiber optic gyroscope for high resolution, real-time monitoring of ground rotations caused by earthquakes in the active volcanic area of Campi Flegrei in Naples, ...