How does NASA know it's time to end a mission? For the Spitzer Space Telescope, the agency can blame it on the spacecraft's juice.
It's time to say goodbye to NASA's Spitzer Space Telescope. Here's why. : Read more
Spitzer showed the star formation rate in the Big Bang model, is dropping off rapidly and declining. ""...these results show that star formation across the universe peaked between 2.3 and 3.8 billion years after the Big Bang and has been decreasing ever since.", ref. Spitzer's Legacy, Sky & Telescope 139(1):18-25, 2020
Good graphs in this report plotting the decline via curve fitting, related to z numbers or redshifts. New galaxies are not forming, new globular clusters are not forming, stars are moving on the H-R star diagram towards white dwarf, neutron star, or black hole end of life. The 2nd Law/entropy is winding the universe down from a distinct, beginning that wound up the universe and Spitzer confirmed this in astronomy.