What we've learned after 35 years of NASA's Hubble
Briefly

The Hubble Space Telescope was launched on April 24, 1990, into low Earth orbit. Initially plagued by optical flaws, servicing missions improved its capabilities. Hubble has since provided groundbreaking insights into the Universe, including the discovery of infant galaxies and direct imaging of exoplanets. It has resolved critical questions about the Universe's age, measured cosmic expansion, and demonstrated the existence of dark matter and dark energy. Now, 35 years after its launch, Hubble continues to play a vital role in astronomy, working alongside other observatories in the pursuit of knowledge.
On April 24, 1990, the Hubble Space Telescope launched into low Earth orbit. Originally, a flaw in the optics led to disappointingly blurry images.
Subsequently, servicing missions transformed Hubble into the legendary observatory we all know. It's shown us the Universe, answering many of our deepest questions.
Hubble revealed baby, infant galaxies like never before and directly imaged exoplanets: worlds orbiting around stars other than the Sun.
Today, Hubble, along with ALMA, JWST, and ground-based observatories, continue to advance our neverending quest for further knowledge.
Read at Big Think
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