By Govert Schilling
400 years in the past in Middelburg, within the Netherlands, the telescope was once invented. the discovery unleashed a revolution within the exploration of the universe. Galileo Galilei found mountains at the Moon, spots at the sunlight, and moons round Jupiter. Christiaan Huygens observed info on Mars and jewelry round Saturn. William Herschel came across a brand new planet and mapped binary stars and nebulae. different astronomers made up our minds the distances to stars, unraveled the constitution of the Milky approach, and stumbled on the growth of the universe. And, as telescopes turned greater and extra robust, astronomers delved deeper into the mysteries of the cosmos. In his Atlas of Astronomical Discoveries, astronomy journalist Govert Schilling tells the tale of four hundred years of telescopic astronomy. He seems on the a hundred most vital discoveries because the invention of the telescope.
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Extra info for Atlas of Astronomical Discoveries
However in 1761 Lomonosov still toys with the idea that there might be life on Venus, and in the mid-twentieth century the planet is seen as a tropical oasis. But we now know that Venus is the Earth’s scorched, infernal step-sister and not her true sister as originally thought. 41 42 Fallen Planet William Herschel Discovers the Planet Uranus 43 44 William Herschel is a composer and musician, not an astronomer. In 1756, aged 18, together with his brother Jacob, he moves from his birthplace in Hanover to England, where he plays oboe, violin and organ.
The hot, white dwarf star in the center of the planetary nebula NGC 2440 has a surface temperature of about 200,000 degrees Celsius. The high-energy radiation of the star heats up the nebular material expelled into space at an earlier stage, when the star was still a red giant. (NASA/ESA/Hubble Heritage Team) [ The Helix Nebula, in the constellation of Aquarius, is one of the closest planetary nebulae. This colorful image was composed from photographs taken by the Hubble Space Telescope and the infrared Spitzer Space Telescope.
In a few billion years our own Sun will swell up to become a red giant surrounded by an expanding planetary nebula. Surprisingly enough the structure of the nebula will possibly be influenced by the presence of the giant planets and the flattened belts of asteroids and ice dwarfs that orbit the Sun. Many planetary nebulae are bipolar: most of the gas ends up in two large lobes on opposite sides of the central star. That is probably because the dying star is part of a binary star system or because, like the Sun, it has a planetary system.