Outer Space & Universe
Outer Space & Universe
Space, also known as outer space, is the near-vacuum between celestial bodies. It is where everything (all of the planets, stars, galaxies and other objects) is found.
On Earth, space begins at the Kármán line (100 km above sea level). This is where Earth's atmosphere is said to stop and outer space begins. This is not a firm boundary but is a convention used by scientists and diplomats.
Items in space are free to move back and forth; up and down; and left and right. These three dimensions are what make 3D space. Items also move forward through time, which is sometimes called the fourth dimension.
The majority of space contains very little matter and so most of it is a vacuum. Scientists do not know how big space is but we do know that space is extremely big, and is always expanding.
According to the big bang theory, all matter and energy in the Universe was compressed into a very small space. Then it exploded and started expanding. Space is still growing in size today; this means the distance from one galaxy to distant galaxies is getting longer.
Gravity is the force that keeps the Moon in orbit around the Earth and the planets in orbit around the Sun. Gravity can stretch and bend space similar to how a heavy ball placed on a stretched sheet of rubber will cause the rubber to stretch. The scientist who discovered that space can bend is named Albert Einstein. How gravity bends space is part of his theory of general relativity.
Astronauts, Cosmonauts, Taikonauts and Spationauts
An astronaut is any person who is trained by NASA to travel and perform tasks in space. Although the space traveler may not necessarily be a United States citizen, each astronaut does go through a rigorous training regiment by the National Aeronautics and Space Administration. Other space travelers go by other names then astronaut depending on their country of origin.
In the United States, astronaut is derived from the Greek words ástron (star) and nautis (sailor). While, in Russia, a space traveler goes by the name космонавт (English: cosmonaut), which is derived from the Greek words kosmos (universe) and nautis (sailor). Westerners call a space traveler from China a taikonaut, based on the 1998 writings of Chiew Lee Yik and Chen Lan where the term tàikōng (great emptiness), Chinese for “space”. In China, the term yuháng yuán (universe navigator) is used for space traveler.
Only the United States of America (United States), Russia (earlier, the Union of Soviet Socialist Republics), and the People’s Republic of China (China) have sent manned spacecraft into space. Other countries have assisted these countries by sending their own space travelers on space missions. For instance, a French space traveler is called a spationaut (from the French word spationaute), which is derived from the Latin spatium (space) and Greek nautis (sailor). (plural in Greek nautes = sailors)
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On November 10, 2013, Europe's GOCE satellite fell to Earth. GOCE is short for Gravity field and steady-state Ocean Circulation Explorer. Its mission was to map Earth's gravitational field. GOCE did this for four years. Then it ran out of fuel. Controller
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California Live Fire linkhttps://www.pressdemocrat.com/multimedia/8930265-181/live-map-of-the-fire?fbclid=IwAR0KN9QZoYjPybjlUDq7WY-tNWYauuZPyt858XFqCryeefHjLDed9SKRdaMThis is a dangerous & historic situations. Please help where you can.We are all in this
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NASA's Super Guppy plane landed in Houston on Nov. 8, 2018 carrying the historic Apollo-Era Mission Control consoles. Several alumni of the Apollo program were on-hand. -- Full Story: https://www.space.com/42394-restored-mission-control-consoles-arrive-ho
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NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #spacetoground to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss
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By studying the fragmentation and clumping of a comet’s tail, scientists are given insights into how that process relates to the formation of asteroids, moons and planets in our solar system. -- Full Story: https://www.space.com/42355-monster-comet-tail-r
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On November 8, 2005, Europe launched its first mission to Venus. The spacecraft was called Venus Express. Venus is a hothouse planet. Lava flows on its surface, and the atmospheric pressure can easily crush an unprotected spacecraft. Even from orbit, Venu
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Two daring spacecraft will make history when they visit unexplored worlds in our solar system as OSIRIS-REx arrives at Asteroid Bennu on Dec. 3, 2018 and New Horizons makes a flyby of Ultima Thule on New Year's Day 2019.Find out more about OSIRIS-REx's mi
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How does someone on Earth fly a spacecraft that's billions of miles away? Science, math, planning and some good old fashioned NASA-know-how.On Dec. 3, 2018, NASA's OSIRIS-REx mission will arrive at Asteroid Bennu where it will spend two years surveying th
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On November 7, 1996, NASA launched its Mars Global Surveyor mission. This was the first mission NASA sent to Mars in almost 20 years. The Mars Global Surveyor spacecraft was an orbiter. It transmitted data from NASA's Mars rovers Sojourner, Spirit and Opp
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NASA’s OSIRIS-REx mission has captured imagery of all of Asteroid Bennu over a four-hour-and-11-minute period. See it rotate in the time-lapse video. -- More about the Asteroid: https://www.space.com/42304-asteroid-bennu-diamond-photo-nasa-osiris-rex.html