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On this day in 1973 – May 14th – NASA launched Skylab.
It was the first US space station, and it included a workshop, a solar observatory, and several hundred life science and physical science experiments.
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Last edited by Mona - Astronomy; 05/14/23 11:58 AM.
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On this day in 2009 – May 14th – the European Space Agency (ESA) launched the Planck Space Observatory.
Launched along with the Herschel Space Observatory, from 2009-2013 Planck made high resolution studies of the cosmic microwave background radiation left over from the very early Universe.
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On this day in 2009 – May 14th – the European Space Agency (ESA) launched the Herschel Space Observatory (HSO), along with Planck.
HSO was a space-based telescope to study the Universe by the light of the far-infrared and submillimeter portions of the spectrum. It was named for William Herschel who discovered the infrared. The telescope was decommissioned in 2013 when the coolant ran out. It had been the largest infrared telescope ever launched until the launch of the James Webb Space Telescope in 2021.
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. On this day in 1718 – May 15th –Johannes Kepler discovered the simple mathematical rule governing the orbits of the solar system's planets, now recognized as Kepler's Third Law of planetary motion.Kepler's three laws described the orbital motions of the planets in a solar system where they orbited the Sun, not the Earth. .
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. On this day in 1857 – May 15th – Scottish-American astronomer Williamina Fleming was born in Dundee, Scotland.Fleming, a computer at Harvard College Observatory, was a pioneer in the classification of stellar spectra. During the course of her career, she also discovered 10 novae, 52 nebulae, and 310 variable stars..
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On this day in 1925 – May 16th – American astronomer Nancy Grace Roman was born in Nashville, Tennessee.
One of the first female executives at NASA, Roman is known to many as the "Mother of Hubble" for her role in planning the Hubble Space Telescope. NASA's infrared space telescope, currently in development, is named for her.
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On this day in 1836 – May 17th – English scientist and astronomer Norman Lockyer was born in Rugby, England.
Lockyer and French scientist Pierre Janssen independently discovered the gas helium in the light spectrum of the Sun decades before any was found on Earth.
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On this day in 1968 – May 17th – the first ESRO satellite was successfully launched.
The European Space Research Organisation (ESRO) was a precursor to the European Space Agency (ESA). ESRO-2B was launched by a Scout rocket from the Western Test Range in California. It was the first mission controlled by teams at the European Space Operations Centre in Darmstadt, Germany.
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On this day in 1974 – May 17th – NASA launched the first ever geostationary satellite.
SMS-1 (Synchronous Meteorological Satellite) was the first satellite in the first series of geostationary meteorological satellites. (A geostationary satellite is in an orbit that keeps it above the same part of the Earth all of the time.)
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On this day in 1711 – May 18th – astronomer, mathematician, philosopher and Jesuit priest, Roger Joseph Boscovich, was born in Ragusa (Dubrovnik) in what is modern-day Croatia.
Boskovich wrote on a wide range of astronomical topics, including the Aurora Borealis, transits of Mercury, and the theory of the telescope. Among other accomplishments, he solved the problem of locating the Sun's equator, observed sunspots to determine the rotation period of the Sun, and discovered the absence of an atmosphere on the Moon.
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