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Rubidium is a chemical element; it has symbol Rb and atomic number 37. It is a very soft, whitish-grey solid in the alkali metal group, similar to potassium and caesium. [9] Rubidium is the first alkali metal in the group to have a density higher than water.
Date Event leading to space exploration Country Researcher(s) Ref(s). 1610 First telescopic observation of the night sky: discovery of the Galilean moons, lunar craters and the phases of Venus. Venice: Galileo Galilei: 1668 First reflecting telescope. England: Isaac Newton: 1781 First telescopic discovery of planet . Great Britain: William ...
Space Shuttle Discovery [4] Kennedy LC-39B United Space Alliance STS-56: NASA Low Earth Solar astronomy: 17 April 11:37:19: Successful Spacelab Pallet: ESA/NASA Low Earth (Discovery) Spacelab ATLAS-2: SPARTAN-201: NASA Low Earth (Discovery) Solar Crewed orbital flight with five astronauts; SPARTAN deployed from Discovery on 11 April and ...
Space exploration also gives scientists the ability to perform experiments in other settings and expand humanity's knowledge. [67] Another claim is that space exploration is a necessity to humankind and that staying on Earth will eventually lead to extinction. Some of the reasons are lack of natural resources, comets, nuclear war, and worldwide ...
This is a timeline of Solar System exploration ordering events in the exploration of the Solar System by date of spacecraft launch. It includes: It includes: All spacecraft that have left Earth orbit for the purposes of Solar System exploration (or were launched with that intention but failed), including lunar probes .
His parents moved to Camp Hill (near Harrisburg, Pennsylvania) in 1959, where he attended high school and graduated valedictorian of his class in 1966. He graduated from Juniata College in 1970 summa cum laude .
The Hubble Space Telescope, the first large optical telescope in orbit, is launched using the Space Shuttle, but astronomers soon discovered that it is crippled by a problem with its mirror. A complex repair mission in 1993 allows the telescope to start producing spectacular images of distant stars, nebulae, and galaxies.
STS-109 (SM3B) was a Space Shuttle mission that launched from the Kennedy Space Center on 1 March 2002. It was the 108th mission of the Space Shuttle program, [1] the 27th flight of the orbiter Columbia [1] and the fourth servicing of the Hubble Space Telescope. [2]