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.

An unstable gyroscope has forced NASA's Hubble Space Telescope to enter safe mode, resulting in a temporary suspension of its scientific observations. Reading time 2 minutes NASA is addressing an ...

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, ...