October 5, 2018 – NASA announced Hubble slept in a scientifically induced coma. One of three gyroscopes tasked with pointing/steadying Hubble’s telescope malfunctioned, NASA placed Hubble in “safe mode” buying time to find a fix. On October 27, recovery and implementation of a back-up gyro returned Hubble to fully operational mission status.Launched in 1990 by Space Shuttle Discovery, initial life expectancy was 15 years. 28 years later and counting, NASA optimistically suggests tenacious little Hubble might hang in there for 10-20 more. Ponder this –
View top 10 Hubble images at – https://www.scientificamerican.com/slideshow/top-10-images-taken-by-the-hubble-space-telescope/
More troublesome than fretting over a briefly comatose Hubble, is news of Kepler’s demise. Launched in 2009, Kepler searched for alien worlds using the “transit method” ( identifying exoplanets by recognizing diminished light when planets pass in front of their Sun ). Of 3,800 confirmed exoplanets known to date, 70% were discovered by Kepler. Ponder – https://www.space.com/21172-greatest-alien-planet-discoveries-nasa-kepler.html
Science always knew Kepler’s fuel would run dry. Confirmation of Kepler’s passing wasn’t unexpected. That said, in my heart of hearts I imagined a period of remission. RIP Kepler, you served humanity well.