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Astronomy ABC - H for Herschel Space Observatory
The Herschel Space Observatory is the largest telescope ever sent into space. It's an infrared telescope named in honor of William Herschel who discovered infrared radiation, and his sister Caroline who worked with him. What's infrared? Who launched the telescope? What did we learn from it?
June 25, 1894: Herman Oberth was born. He was an Austro-Hungarian-born German physicist and engineer. He is considered one of the founding fathers of rocketry and astronautics.
June 26, 1730: Charles Messier was born. Messier, a French astronomer, is best known for his catalog of nebulae and star clusters. It helped comet hunters distinguish a comet from these permanent objects. A deep sky object with an 'M' prefix refers to Messier objects, e.g., M1 which is the Crab Nebula.
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