Nicolaus Copernicus published On the Revolutions of the Heavenly Spheres claiming that every planet including the sun revolved around the Earth, in other words the Earth was at the center of the solar system.
Galileo first used the telescope that he created to view the stars and planets. He discovered 4 Jupiter Moons and our moon phase.
Issac Newton invented the first reflecting telescope.
Isaac Newton published the Mathematical Principles of Natural Philosophy where he laid the foundations for universal gravitation and described the motion of the Sun and the planets.
The German V-2 rocket became the first vehicle to enter outer space.
Fruit flies became the first animals to go to outer space aboard a V-2 rocket sent by the United States.
Russia (USSR) launched Sputnik 1 which became the first satellite into orbit around Earth. This ushered in the Space Age. It also started Space Race between the Russians and the United States. The first animal in orbit was the Russian dog Laika.
Beginning of the Space Age
Russian cosmonaut Yuri Gagarin wore the first space suit and became the first human in space and the first human to orbit the Earth in the first space ship. Alan Shepherd became the first American in space just three weeks after Yuri Gagarin.
Russian cosmonaut Alexei Leonov was the first man to walk in space. The USA spacecraft Mariner 4 made the first flyby of the planet Mars.
The Apollo 11 spacecraft landed on the Moon and Neil Armstrong became the first man to walk on the Moon.
The 1970's brought a series of cutbacks that spurred the center to explore new areas of research such as renewable energy and communication satellites. The aeropropulsion work concentrated on noise and emissions reductions. The center’s most high-profile successes during the 1970's were the Titan-Centaur launches of Viking and Voyager spacecraft. Launch of the second Space Electric Rocket Test (SERT II) on February 3.
In the future NASA wants to send another rover called the Mars 2020 also Euclid is another is used to investigate dark matter and dark energy.
The Spectro-Photometer for the History of the Universe, Epoch of Reionization or SPHEREx it will survey hundred of millions of galaxy.
Psyche mission to a unique metal asteroid called psyche which appears to be exposed nickel-iron core of an early planet, one of the building blocks of our solar system.
Wide Field Infrared Survey Telescope also know as WFIRST it is to be used for measureing light from galaxies, identifying exoplanets from the inner part of the milkyway, and the universe itself