NASA Spatial Space Telescope is finally approaching the end of an absolutely amazing journey. The spacecraft has been deep in space for more than a decade and a half, and has overcome its initially planned mission for over 11 years. During this time, she made some incredible discoveries and offered scientists new insights into the work of some of our closest planetary neighbors as well as distant sites for which we can only dream of a one-day visit. 30, 2020, NASA's Reactive Motion Laboratory looks back on its incredible journey, while offering some technical insights that the still-functioning telescope will have to be turned off. I do not see things the same way it is, for example, the Hubble telescope. He senses the heat, not the visible light, and this allows him to see things that can not be seen by optical telescopes. This makes it incredibly useful to spot very distant stars and to notice the different features of the Milky Way, which would otherwise go unnoticed. the telescope will still be technically functional when NASA finally pulled the plug. But why?
NASA's JPL offers some background:
Spitter walks around the Sun on a road like Earth's, but moves a bit slower. Today it crosses 254 million kilometers behind our planet ̵1; more than 600 times the distance between the Earth and the Moon. This distance, along with Spitzer's orbital curve, means that when the spacecraft directs its fixed antenna to the Earth to retrieve data or receive commands, its solar panels tilt away from the Sun. During these periods, the spacecraft must rely on a combination of solar energy and battery to work.
This would be good, if not the fact that the distance between the telescope and the Earth continues to grow. For many years now, NASA had to dramatically adjust the telescope's solar grille to ensure that it can maintain power while communicating with the Earth. Even then, she can only send data for about two and a half hours before adjusting again.
The unfortunate reality here is that the spacecraft is not effective enough to guarantee it for further use, and from January 2020 NASA will have to shut it down forever.