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Telescope was made/discovered
Hans Lippershey discovered the curved mirror and put it against an eyeglass lense and it became magnified. -
Other Planets Orbit the Sun
Nicolaus Copernicus discovered that not just Earth orbits the sun. -
Jupiter has 4 Moons
Galileo discovered that Jupiter does have moons and many of them. -
Saturn Has it's Own Rings
Galileo discovered that Saturn the planet has it's own rings orbitting around it. -
Milky Way is a Disk of Stars
William Herschel discovered that our galaxy is made of stars in a disk shape. -
New Galaxies
Edwin Hubble discovered that there are other galaxies beyond us. -
Exoplanets
Aleksander Wolszczan discovered exoplanets in our universe. Exoplanets are planets that orbit stars in other solar systems. -
Kepler Mission
The Kepler space rover went into space to discover other planets that orbit other stars. (exoplanets) -
Dark Matter/Energy
Babcock discovered dark matter in space.Itś invisible but the objects behind it let us determine it exists.