I bought a $50 telescope on Facebook Marketplace — here's what I learned

I bought a $50 telescope from Facebook Marketplace

The top 3

  1. Galileo's Pioneering Lunar and Planetary Views: Galileo Galilei's early telescope observations in 1609-1610 revealed the Moon's imperfect, cratered surface, Jupiter's four largest moons (Io, Europa, Ganymede, Callisto), and the phases of Venus, providing crucial evidence for a heliocentric solar system.
  2. Hubble's Unveiling of Cosmic Age and Evolution: The Hubble Space Telescope, launched in 1990, has provided unprecedented views of the universe, helping to refine the age of the universe, study exoplanet atmospheres, and gather evidence for dark energy.
  3. Webb's Glimpse into the Early Universe: The James Webb Space Telescope (JWST), the largest and most powerful space telescope, is revealing the universe's earliest galaxies, star formation regions, and exoplanet atmospheres, including the most distant galaxies yet confirmed, dating back to only 300 million years after the Big Bang.

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