NASA is bidding goodbye to a premier space telescope, one that let scientists peer into the dusty corners of the universe.
NASA turns off the Spitzer Space Telescope this week. Its infrared eye changed our view of the universe. : Read more
"The only way that we can understand how stars form," she said, "is by trying to study as many as possible and then statistically trying to say, 'OK, well, there's a lot that look like this, there's a lot that look like that,' and then trying to piece together the timescales and the story." Spitzer let scientists do just that."
Spitzer documented cosmic high noon concerning stars forming too. "...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.", Spitzer's Legacy, Sky & Telescope 139(1):18-25, 2020
The universe since the *beginning*, is winding down, not up.
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