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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Watch live! China launches Tianzhou-6 cargo mission to Tiangong space station
Added 80 Views / 0 LikesWatch live as a Long March 7 rocket launches the Tianzhou-6 cargo spacecraft to the Tiangong space station on May 10, 2023. The scheduled launch time is at 9:22am EDT ( 21:22pm BJT) and the livefeed will start from 9:15-9:30am EDT (21:15-22:30 BJT) and wi
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11:33
Liftoff! China launches cargo spacecraft to Tiangong space station
Added 80 Views / 0 LikesChina's Long March 7 rocket launched the Tianzhou-6 cargo spacecraft to the Tiangong space station on May 10, 2023. The rocket lifted off from the Wenchang Spacecraft Launch Site in south China at 9:22am EDT (21:22pm BJT). [Full Story](https://www.space.c
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03:41
RED ALERT! Over a Foot of Rain coming to Texas! Canadian Tornado Warning & Lots of USA severe wx.
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10:51
NASA fires up Artemis moon rocket engine for 10.5 minutes
Added 80 Views / 0 LikesThe Space Launch System rocket's RS-25 engine was fired up for certification test at NASA's Stennis Space Center on May 10, 2023. The hotfire test last 10.5 minutes and produced "up to 418,000 pounds of sea-level thrust," according to NASA.Credit: NASA St
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01:07
See amazing Hubble Space Telescope imagery of a globular cluster in 4k
Added 80 Views / 0 LikesThe Hubble Space Telescope has captured imagery of globular cluster NGC 6325. It is located "26,000 light years from Earth in the constellation Ophiuchus," according to NASA/ESA.Credit: Space.com | footage courtesy: ESA/Hubble & NASA, E. Noyola, R. Cohen
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Super Loud Mystery BOOM shakes homes across the North East USA! some California Dams r filling up!
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00:37
'Walking on the Moon at 30,000 feet!' mini-doc trailer takes you onboard AirZeroG flight
Added 80 Views / 0 LikesGet a sneak peak at the new Space.com mini-documentary "Walking on the moon at 30,000 feet!" in this trailer. It premieres at 11am ET on June 7 - Watch it here: https://youtu.be/-ZapKkbP3sACredit: Space.com | footage courtesy: ESA/Novespace A Future Studi
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06:39
CODE RED ALERT! Dam Destruction! New York turns into Mars! USA Volcano erupts! June Hurricane?
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01:02
China's launches 'experimental' communications satellite atop Kuaizhou 1A rocket
Added 80 Views / 0 LikesChina's Kuaizhou 1A rocket launched the experimental Longjiang-3 satellite from the Jiuquan Satellite Launch Center on June 9, 2023. The satellite will be used for "communications and remote sensing technology verification," according to China Central Tel
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06:28
RED ALERT! Double Trouble Hurricane Watch and USA Severe Weather through Sunday.
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01:14
X1.1 solar flare! New sunspot makes presence known with major fireworks
Added 80 Views / 0 LikesNASA Solar Dynamics Observatory captured newly arrived sunspot AR3341 blast a powerful X1.1 solar flare on June 20, 2023. The flare "caused a deep shortwave radio blackout over North America." according to Spaceweather.com. Credit: Space.com | footage cou
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02:56
Space to Ground: Making a Splash: June 30, 2023
Added 80 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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Endless Severe Weather Summer continues! France Riots! Billionaire Brawl location misinformation!
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02:07
SpaceX aborts Starlink launch at T-5 seconds left in countdown
Added 80 Views / 0 LikesSpaceX aborted the Falcon 9 launch of 15 Starlink satellites from California's Vandenberg Space Force Base on July 19, 2023. Full Story: https://www.space.com/spacex-starlink-launch-abort-july-19-2023Credit: SpaceX
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04:01
Astronaut controls humanoid robot from International Space Station
Added 80 Views / 0 LikesThe humanoid Rollin' Justin simulates planetary operations during a ground-to-space exercise in 2018, with European Space Agency astronaut Alexander Gerst. Gerst and Justin are both part of the German space agency (DLR). Gerst controlled the robot from th
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08:20
Asteroid Bennu samples revealed! 'Contains abundant water,' says NASA Chief
Added 80 Views / 0 LikesGet the first glimpse at some of the samples collected by the OSIRIS-REx mission of asteroid Bennu. The samples studied so far contain "abundant water in the form of hydrated clay minerals and they contain carbon," according to NASA administrator Bill Nel
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04:05
Crew-1 for All
Added 79 Views / 0 LikesThe next SpaceX Crew Dragon to fly to the International Space Station will carry four astronauts on a mission known as Crew-1. What does that mean? Who better to explain the first operational mission of a commercial crew space vehicle than the people who
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05:41
Down to Earth - S2:E2 | Sensory Overload
Added 79 Views / 0 LikesIn episode two of Down to Earth: Conversations, astronaut Sunita Williams and environmental studies student Adrien Prouty explore what it's like to conduct a spacewalk on the International Space Station._______________________________________FOLLOW THE SP
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02:29
Space to Ground: Double Dragons: 07/22/2022
Added 79 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