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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01:13
Return to Venus! New NASA animation shows 'flying chemistry lab'
Added 271 Views / 0 LikesModern instrumentation on 'flying chemistry labs' and landers could revolutionize our understanding of Earth's sister planet Venus. NASA's Goddard Spaceflight Center explains.Credit: NASA's Goddard Space Flight CenterJames Tralie (ADNET):Lead ProducerLead
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01:29
Reused SpaceX Rocket Lands on Drone Ship After BulgariaSat-1 Launch
Added 617 Views / 0 LikesReused SpaceX Rocket Lands on Drone Ship After BulgariaSat-1 Launch
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02:56
Reverse shockwave studied with stunning supernova imagery
Added 179 Views / 0 LikesSupernova remnant G344.7-0.1 has been studied using the Chandra X-ray observatory. This "Type Ia" supernova may have resulted from a “white dwarf accumulating material from a companion star” until it exploded, according to the Chandra team.Credit: NASA/CX
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00:30
Revisiting a Celestial Fireworks Display
Added 88 Views / 0 LikesMore information and download options: http://esahubble.org/videos/potw2248a/Credit:ESA/Hubble & NASA, S. Kulkarni, Y. Chu Music: Stellardrone - Billions and Billions
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00:40
Revolve Around A Black Hole Accretion Disk in Visualization
Added 309 Views / 0 LikesIn this animation, a complete revolution around a black hole and its accretion disk is shown -- Black Holes: Facts, Theory, and Definition https://space.com/15421-black-holes-facts-formation-discovery-sdcmp.htmlThe simulation views the black hole from man
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03:29
Richard Branson and crewmates get Virgin Galactic astronaut wings from Chris Hadfield
Added 186 Views / 0 LikesFmr. Canadian Space Agency astronaut Chris Hadfield presents Virgin Galactic wings to the crew of Unity 22, Richard Branson, Sirisha Bandla, Colin Bennett and Beth Moses. Watch the flight: https://www.space.com/virgin-galactic-unity-22-branson-flight-succ
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00:33
Richard Branson delivers message from space! 'Just imagine what you can do'
Added 138 Views / 0 LikesSir Richard Branson says "if we can do this, just imagine what you can do," in a message to kids during the historic Virgin Galactic Unity 22 flight. Watch the flight: https://www.space.com/virgin-galactic-unity-22-branson-flight-successCredit: Virgin Gal
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01:42
Richard Branson to fly on the Virgin Galactic Unity 22 flight on July 11! Meet the crew
Added 190 Views / 0 LikesVirgin Galactic announced that Richard Branson will join Beth Moses, Sirisha Bandla and Colin Bennett as mission specialists for the SpaceShipTwo Unity 22 test flight on July 11, 2021. Credit: Virgin Galactic
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00:51
Ride-Along View: Grasshopper 12-Story Test Flight 12/17/12
Added 439 Views / 0 LikesSpaceX's Grasshopper takes a 12-story leap towards full and rapid rocket reusability in a test flight conducted December 17, 2012 at SpaceX's rocket development facility in McGregor, Texas. Grasshopper, a vertical takeoff and landing vehicle (VTVL), rose
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00:22
Ring formation around extrasolar planet
Added 167 Views / 0 LikesFormation of a ring around an extrasolar planet (artist's impression)More information and download options: http://www.spacetelescope.org/videos/astro_am/Credit:ESA/Hubble (M. Kornmesser & L. L. Christensen)
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03:13
Ring of Fire Alert! CANADA EARTHQUAKES TODAY: 6.0, 5.8, 5.1 Magnitude
Added 325 Views / 0 LikesWe've got an active North American Ring of Fire today.We also had a 5.8 Earthquake in Guatemala today.We are on very Super Asteroid Fight Club Red Alert now.Stay aware.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096WWW.PAYPAL.ME/THOR
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04:38
Ring of Fire Alert: next 30 days! Total Solar Eclipse + Approaching Jupiter & Saturn Conjunction
Added 362 Views / 0 Likesvolcanoes & earthquakes oh my.T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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07:39
Ring of Fire storms to Light up the USA through the weekend & Beyond
Added 586 Views / 0 LikesRing of Fire storms to Light up the USA through the weekend & Beyond
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04:44
Ring of Fire update: New July Volcano Eruptions - Bali & Vanuatu
Added 351 Views / 0 LikesThe Ring of Fire is active. God Bless everyone,Thttps://www.paypal.me/THORnewsTshirtshttps://hitthebuttonbaby.com/THORNEWS PO BOX 35946HOUSTON TEXAS77235-5946Link to the ZGOLDEN youtube channelhttps://www.youtube.com/watch?v=vpN7i4-LUDEarticles on eruptio
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02:07
Rings Of Echoing Light Pinpoint A Hidden Neutron Star | Video
Added 746 Views / 0 LikesRings Of Echoing Light Pinpoint A Hidden Neutron Star | Video
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01:41
RIP Comet ISON? Icy Visitor Missing After Sun Flyby | Video
Added 756 Views / 0 LikesThe comet has most likely disintegrated under the high heat and gravitational stress of the Sun on Nov. 28, 2013. It is not visible in Solar Dynamics Observatory footage and NASA scientists confirmed that they do not see it. All things ISON here: http://g
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02:57
RIP Universe - Your Time Is Coming… Slowly | Video
Added 529 Views / 0 LikesRIP Universe - Your Time Is Coming… Slowly | Video
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01:12
RIP, NASA Kepler - What Will Become of the Spacecraft?
Added 355 Views / 0 LikesNASA has retired the Kepler Space Telescope. Find out what will become of the spacecraft over the next 100 years. -- RIP, Kepler: NASA's Revolutionary Planet-Hunting Telescope Runs Out of Fuel: https://www.space.com/41363-kepler-exoplanet-hunting-telescop