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)
-
01:30
Star Spewing a Jet in Large Magellanic Cloud - Seen in Visible Light
Added 351 Views / 0 LikesA star-forming region of the Large Magellanic Cloud, a satellite galaxy of the Milky Way, has been observed using the European Southern Observatory Very Large Telescope's MUSE instrument. For the first time ever in visible light, a star was spotted emitti
-
10:24
Tornadoes with our 2200 mile Ice Sleet Rain Snow Storm? Yes. It is possible cuz it is 2022.
Added 147 Views / 0 LikesI'm grumpy but i think you are peaches & cream.God bless everyone,T LEWISON5430 BIRDWOOD RD. # 416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
07:01
It's Naked Eye visible way ahead of schedule! Comet C/2014 Q2 LoveJoy
Added 904 Views / 0 LikesIt's Naked Eye visible way ahead of schedule! Comet C/2014 Q2 LoveJoy
-
01:25
Europe & USA Weather - Hey, Sugar Britchez, How would you like your Warning?
Added 530 Views / 0 LikesEurope & USA Weather - Hey, Sugar Britchez, How would you like your Warning?
-
1:24:45
Starlink Mission
Added 245 Views / 0 LikesSpaceX is targeting Wednesday, April 7 for launch of 60 Starlink satellites from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station in Florida. The instantaneous window is at 12:34 p.m. EDT, or 16:34 UTC, and a backup opportunity is av
-
02:51
M87 galaxy's massive jet 'extends for thousands of light-years' - NASA explains Hubble's view
Added 52 Views / 0 LikesThe supermassive blackhole at the center of elliptical galaxy M87 is connected to a massive jet that "extends for thousands of light-years," according to NASA's Goddard Space Flight Center. Astrophysicist Dr. Padi Boyd explains. Credit: NASA's Goddard Spa
-
17:31
271 Rivers Flooding! Possible Texas Tornadoes on Friday! Snow for Wyoming! Ice for the Dakotas!
Added 340 Views / 0 Likesthe weather is weird.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
LIVE: Ariane 5 to Launch Galaxy 35 and 36 / MTG-I1 Satellites @arianespace
Added 86 Views / 0 LikesAn Arianespace Ariane 5 ECA+ rocket will launch on a mission designated VA259, to put the Galaxy 35, Galaxy 36 communications satellites and the MTG-I 1 meteorological satellite into orbit. The Galaxy satellites, built by Maxar, will fly in a stacked fash
-
02:36
Space to Ground: 3D Printing in Zero G: 07/01/2016
Added 635 Views / 0 LikesSpace to Ground: 3D Printing in Zero G: 07/01/2016
-
01:07
See the Apollo 11 Landing Site from Lunar Orbit
Added 471 Views / 0 LikesA series of images of the Apollo 11 landing site has been captured by NASA's Lunar Reconnaissance Orbiter. The angle of the Sun shifts the lighting of the site in this compilation of images. (Video is looped) -- Apollo 11 Landing Site Seen in Unprecedente
-
01:03
Blooming Solar Flare Seeds Coronal Loops | Video
Added 596 Views / 0 LikesBlooming Solar Flare Seeds Coronal Loops | Video
-
01:18
SpaceX Falcon Heavy to launch NASA's VIPER lunar lander
Added 223 Views / 0 LikesOn April 13, 2021, Astrobotic announced that the Falcon Heavy rocket will launch the Griffin lander carrying NASA's Volatiles Investigating Polar Exploration Rover (VIPER) to the moon. Credit: Space.com | footage & animations: SpaceX & Astrobotic | produc
-
01:06
OSIRIS-APEX's epic journey to asteroid Apophis in time-lapsed orbit animation
Added 45 Views / 0 LikesThe OSIRIS-REx spacecraft's name has been changed to OSIRIS-APEX for its new mission to asteroid Apophis. See it's journey to the asteroid in this orbit animation. Credit: NASA's Scientific Visualization Studio | edited by Space.com
-
01:37
Exercise in isolation! This is how astronauts do it on Space Station
Added 324 Views / 0 LikesNASA astronaut Jessica Meir talks about how exercise is important in isolation and shows how astronauts workout on the International Space Station. Credit: NASA
-
01:15
See SpaceX deploy NASA water-monitoring satellite in amazing view from space
Added 81 Views / 0 LikesSpaceX deployed NASA's Surface Water and Ocean Topography (SWOT) satellite shortly after its Falcon 9 rocket launch on Dec. 16. 2022. Watch it launch: https://www.space.com/spacex-launches-nasa-swot-water-monitoring-satelliteCredit: NASA
-
13:39
THORnews LowFi Solar Science + Mars Saturn & the Galactic Center Big Thing
Added 560 Views / 0 LikesTHORnews LowFi Solar Science + Mars Saturn & the Galactic Center Big Thing
-
01:33
Lava Tubes: Science Beneath the Surface of the Moon
Added 336 Views / 0 LikesAn intricate, winding network of channels could exist just below the surface of the Moon. These lava tubes, produced by underground flowing magma from ancient volcanoes, are shielded from solar radiation and may hold secrets to the history of our solar sy
-
01:02
Sungrazer comet pair vaporized by 'insanely strong solar radiation'
Added 109 Views / 0 LikesA pair of sungrazer comets, which are likely fragments of each other, were vaporized by the sun by "insanely strong solar radiation," according to Naval Research Lab's Karl Battams. A massive solar coronal mass ejection can be seen in the ESA/NASA SOHO fo