Happy Birthday Hubble Telescope! It’s been an amazing 25 years of breakthroughs in understanding our galaxy and how the universe works. For me, the most memorable discovery from your journey came when you detected Pluto’s two moons, and other objects in the Kuiper Belt found to have more mass than little Pluto.
That meant these moons could classify as planets, and as a result this discovery demoted Pluto to a “dwarf planet.”
That Pluto was removed it from the line up of planets I had memorized so carefully for my fifth grade science class, shocked me. Hubble’s images are so clear and provide scientists a look at objects we had never seen before in deep space, leading to radical changes and new theories about the makeup of our universe. Hubble quite literally opened my eyes to the idea there was something beyond Pluto - our solar system is a big concept to grasp but what lies beyond became something more than just what I had imagined when I watched Star Trek or Star Wars.
For the first time I understood the universe is not a static thing. Its planets, exoplanets, comets, galaxies, and more are changing all the time. It fills me with excitement and wonder as we look to solve the mysteries behind how and why that happens. Thanks for the inspiration Hubble!
Look for more posts from scientists, astrophysicists, and space experts on their Hubble moments.
Eileen Marable, Science Channel Digital Producer (Who still feels bad about Pluto)
Below: My favorite image, the Cat's Eye Nebula