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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01:31
Planet discovered around 'extreme star pair'
Added 172 Views / 0 LikesA planet has been found orbiting binary star system b Centauri using ESO's Very Large Telescope.. It was a surprise discovery as " astronomers believed planets could not exist around stars this massive and this hot," according to the European Southern Obs
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02:18
Planet Earth From Space - NASA's 2012 Highlight Video
Added 706 Views / 0 LikesNASA has compiled some of the best imagery attained of our world in 2012. Imagery and animations from the Space Station and multiple Earth observing missions were used.
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01:29
Planet Hunting Telescopes Make First Observation
Added 535 Views / 0 LikesPlanet Hunting Telescopes Make First Observation
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01:27
Planet may be forming in a 'twist' observed by Very Large Telescope
Added 361 Views / 0 LikesThe European Southern Observatory's (ESO) Very Large Telescope has been used to observe the star AB Aurigae. A detailed look using the telescopes SPHERE instrument has revealed "a ‘twist’ that marks the site where a planet may be forming," according to ES
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05:00
Planet Orbiting Sun's Twin Discovered In Star Cluster | Video
Added 836 Views / 0 LikesExoplanets have been found in star clusters but this is the 1st orbiting a star almost exactly like the Sun. ESO's HARPS planet hunter instrument, mounted on a Chilean telescope, found the hot gas world in long-lived cluster Messier 67. -- Read more here:
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06:57
Planet Parade 2022! Hot Jupiter Gossip! Hurricane Watch! Mercury is the Sun's Moon?
Added 126 Views / 0 Likeshappy, grateful & nerdin' out, yo.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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14:38
Planet Parade! 126 degrees in Iran! Martian bricks! Chinese Jumboat Restaurant Sinks!
Added 128 Views / 0 LikesIt's a hot & wild world.we've got a parade of planetsMercury Venus Mars Saturn Jupiter Uranus Neptune Plutorecord breaking heat across the globea strong monsoon season inboundand lots of other news.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON
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03:05
Planet Ripped Apart By White Dwarf? | Video
Added 812 Views / 0 LikesPlanet Ripped Apart By White Dwarf? | Video
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01:08
Planet that ‘shouldn’t be there’ detected! 2 possibilities why Halla exists
Added 121 Views / 0 LikesJupiter-like planet 8 UMi b, named Halla, orbits its host red giant star Baekdu closely (only 0.46 astronomical units away). The red giant's merger with a white dwarf star questions how Halla could exist. Full Story: https://www.space.com/forbidden-planet
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07:01
Planet Venus is a total Mystery and Space Agencies are Weird.
Added 328 Views / 0 LikesPlease have a wonderful weekend.maybe this is serious science. maybe it's not. Stay cool,God bless everyone,T
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02:28
PLANET VENUS IS BACK & WEIRD Y"ALL.
Added 321 Views / 0 LikesI've been working on a cool Venus video but hackers keep dive bombing my editing program, luckily i made a low res preview a few days ago! enjoy until someone changes Ben & Diamond's diapers and i can put out the real thing.God bless everyone,T LEWISON543
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01:43
Planet With Gigantic Rings Behind Weird Star Eclipses? | Video
Added 618 Views / 0 LikesPlanet With Gigantic Rings Behind Weird Star Eclipses? | Video
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08:08
Planet X & Nibiru & Nazis & the REAL shape of the Sun
Added 600 Views / 0 LikesPlanet X & Nibiru & Nazis & the REAL shape of the Sun
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11:30
Planet X & Planet 9 - An Interview with Mike "PlutoKiller" Brown
Added 548 Views / 0 LikesPlanet X & Planet 9 - An Interview with Mike "PlutoKiller" Brown
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07:42
Planet X aka Planet 9 is responsible for Periodic Mass Extinctions on Earth! So says a Scientist.
Added 721 Views / 0 LikesPlanet X aka Planet 9 is responsible for Periodic Mass Extinctions on Earth! So says a Scientist.
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08:50
Planet X Discovered: Multiple Objects have been found in our Solar System by Multiple Astronomers
Added 779 Views / 0 LikesPlanet X Discovered: Multiple Objects have been found in our Solar System by Multiple Astronomers
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09:54
Planet X has been Discovered & Photographed by Pro Astronomers!
Added 519 Views / 0 LikesPlanet X has been Discovered & Photographed by Pro Astronomers!