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Famous Scientists: Hermann Ludwig Ferdinand von Helmholtz (1821 - 1894, German physiologist and physicist), Friedrich Johannes Kepler (1571 - 1630, German philosopher, evangelical theologian, mathematician, astronomer, astrologer and opticians) and Dominique François Jean Arago (1786 - 1853, French physicist and politician). Wood engraving, published in 1877.
While watching Inspirational Skies
Milky way in La Palma island. Starlight reserve
The Milky Way is visible in the night sky above illuminated trees in Yosemite National Park, California in summer.
Circumpolar at the Gorliz lighthouse
Milky Way with Telescope on Mountains.
Benjamin Franklin cut from 100 US dollar banknote and Aurel Vlaicu cut from 50 Romanian lei banknote for design purpose
A satellite communications tower under a starry sky at night. Circolar star trails in the background. The camera is pointed at the North Star so the stars turn in a circle.
White meteorological radar station with blinking lights set against a deep blue starry sky and a romantic galaxy. Captivating night scene, Wufeng Mountain, Taiwan.
Mountain cabin at dawn in Norway
Benjamin Franklin cut on new 100 dollars banknote and Nicolaus Copernicus cut on 1000 Polish zloty  for design purpose
night sky with many stars, star trail over trees in forest in winter
Portrait of Reverend David Unaipon from Australian 50 dollar isolated on white background.
Dramatic shelf cloud formation dominates the sky above a rural emergency services building. Dark, ominous cloud stretches across the horizon, contrasting with bright landscape below. White pickup trucks park in front of a simple white building with red roof. Flag poles stand tall next to the structure. Surrounding area appears to be open farmland or prairie, typical of Oklahoma's rural landscape.
Night view. A special astrophysical observatory and a crane against the background of the starry sky and Caucasian mountains.
Night City
Milky Way over the island of La Palma and the Roque de los Muchachos Observatory
The galaxy in summer
Benjamin Franklin cut from 100 US dollar banknote and Nicolae Grigorescu cut out from 10 Romanian Lei banknote for design purpose
A low angle view of heliostats and sun rays emanating from a generating tower at the Khi Solar One solar energy generation plant in the desert near Upington and Keimoes in the Northern Cape, South Africa.
Star tracks above telescope dome
A 50 minute lapse in time showing Earth's rotation over a still lake.  Light pollution on the horizon from a nearby city.  Long exposure shot at high iso.
A weather station is a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions - Czech metrology institute, weather station Kocelovice.
Starry sky
Photo taken in Ahwa, India
The Milky Way, with no color correction.
Benjamin Franklin cut on new 100 dollars banknote and Nicolae Iorga cut on old 10000 Romanian lei banknote
Illustration from 19th century
Ninomiya Sontoku a closeup portrait from old Japanese yen
The stars spin around Earth's North Celestial Pole very near the North Star, Polaris.  Long exposure.
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