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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1st Landfalling Hurricane of the Season/Year?
Added 342 Views / 0 LikesIt looks like we've got MAJOR trouble on our hands in 16 days.This one looks real. This one looks like real trouble. Gulf Coast & Atlantic Coastal states. Watch this one closely.God bless everyone,Thttps://www.paypal.me/THORnewsTHORNEWS PO BOX 35946HOUSTO
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05:36
Blastoff! NASA InSight Mission Launches to Mars
Added 474 Views / 0 LikesIn the first interplanetary launch from California, the NASA InSight mission blasted off from Vandenberg Air Force Base atop an United Launch Alliance Atlas V rocket on May 5, 2018. Credit: NASA
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The Weather is Wild & It's only going to get Wilder + Tropical Development? & Volcanoes
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NASA GEDI Mission (Pronounced Jedi) Will Use Laser to Study Earth’s Forests
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5 Fun Facts About NASA's InSight Mars Lander
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Space to Ground: Releasing Dragon: 05/04/2018
Added 438 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 #spacetoground to talk to us.For more information about STEM on Station:https://www.nasa.gov/audience/foreducators/stem
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OTD in Space – May 4: 1st Official 'Star Wars' Day Celebration
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Hubble at 28: Space Telescope’s Awesome Achievements Revisited
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Major Tornado Trouble USA! The storm continues to move East.
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Checking In with the 2017 Astronaut Candidate Class, Part 1
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Tornadoes & Wind & Rain moving across the USA
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Humans Detect Helium in Exoplanet's Atmosphere for First Time
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Artist’s impression of WASP-107b
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Science declares Uranus smells like farts. SRZLY, bro. - a Comedic observation for adults
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20 Most Ridiculous & Hilarious Fast Food Inventions* of All Time.
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Mars, NASA Launch and Eta Aquarids in May 2018 Skywatching
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How to Get Mars Samples to Earth - 3 Missions Necessary?
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