Legacy & Impact: Hubble's 35-Year Crown

Launched 1990: 1.6M+ observations, 20,000+ papers, and the measuring stick for the age of the universe.

The top 3

1. 35 Years, 1.6 Million Shots: Since April 1990, Hubble has made 1.6M+ observations feeding 20,000+ peer-reviewed papers — no other telescope comes close.
2. It Measured the Universe: Hubble helped pin down the cosmic expansion rate (the Hubble constant) and fix the universe's age at ~13.8 billion years.
3. The Only One Repaired in Space: Astronauts serviced Hubble 5 times (1993-2009), fixing its blurry mirror and swapping in new cameras — Webb is too far to reach.

Sources

• NASA — Hubble Space Telescope
• STScI — HubbleSite.org

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