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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03:39
6.3 Earthquake China, Cat 2 Hurricane Douglas headed to Hawaii, 91L to TX & Gonzalo strengthens
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07:25
Canada Tornado Warning! Wildfires in Colorado & California & Idaho & Wyoming & Maryland Floods
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01:31
Final HTV cargo spacecraft departs space station
Added 277 Views / 0 LikesThe Japan Aerospace Exploration Agency's (JAXA) ninth H-II Transfer Vehicle (HTV-9) undocked from the International Space Staiton on Aug. 19, 2020. The de-orbit, which will occur on Aug. 21, will mark the end of 11 years of HTV missions. Read more: https:
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NASA Engineer Observes Sea Level Rise from Space for 30 Years | Sentinel-6 Michael Freilich
Added 277 Views / 0 LikesSea level across the globe is rising as a result of a changing climate — and the rates at which it is rising are accelerating. For NASA JPL engineer Parag Vaze, studying Earth’s rising ocean has been a career three decades in the making. The launch of the
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12:02
This West Coast Storm is a Monster.
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06:53
MONSTER Hurricane Dorian: Personal Predictions & Evacuation Recommendations
Added 276 Views / 0 LikesWARNING: You may not like my opinion.This is one of the biggest moments in American history.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patre
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10:39
RED ALERT! MAJOR HURRICANE FOR NC NY NJ BOSTON & NE September 17th-21st ish
Added 276 Views / 0 LikesThe BAD NEWS: 100 Million people on the East Coast have 2 weeks to prepare for the Superior Neptune Opposition Hurricane that will have major impacts on almost all of the EAST COAST of the USA.The GOOD NEWS: There is a 10 to 20% chance this thing curves o
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18:47
Worst Case Scenario? the NE USA gets hit by TWO Hurricanes & Texas flood next 10 days
Added 276 Views / 0 LikesThis is an Asteroid Fight Club meeting to discussHurricane Humberto. Hurricane Gabrielle. & a Texas Flood. God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashAppht
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02:53
Space to Ground: Fanning the Flames: 05/15/2020
Added 276 Views / 0 LikesNASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #AskNASA to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss-scien
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Congratulation! Hope is ALIVE Planet Parade Super West Coast Kick Off Firework Show July 2020!
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14:54
hurricane hurtles toward Hawaii & an intricate breakdown of possibly VERY dangerous Invest 92L
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03:41
NASA Chief: Mars 2020 Perseverance rover is 'go for launch'
Added 276 Views / 0 LikesThe Launch Readiness Review for the Mars 2020 Perseverance rover has been completed and it's "go for launch," according to NASA administrator Jim Bridenstine. Credit: NASA
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14:43
Alert! Flood threat for 30 million people in North East USA from Tropical Storm Isaias!
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07:24
Multiple Tropical Storms & Hurricanes showing up on Multiple models starting August 20th, y'all.
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See the odd stellar orbits and evolution of a triple star system
Added 276 Views / 0 LikesGW Orionis system observations by the Very Large Telescope and the Atacama Large Millimeter/submillimeter Array (ALMA) have revealed that the stars "tear apart their planet-forming disc." according to the European Southern Observatory. See how the stars o
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00:41
Jupiter and Europa spied in multiple wavelengths by Hubble
Added 276 Views / 0 LikesJupiter was imaged by the Hubble Space Telescope in ultraviolet, visible and near-infrared light in Aug. 2020. The gas giant's moon Europa can be seen in the imagery as well. -- Pastel-colored Jupiter dazzles in gorgeous Hubble telescope photo: https://ww