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)
6.0 Earthquake Greece! Texas Flood watch this Week! October 13th Hurricane Watch! 4 Sunspots & Snow.Added 10 Views / 0 Likes
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The NASA/USGS Landsat 9 satellite launch from Space Launch Complex 3 at Vandenberg Space Force Base in California aboard a United Launch Alliance (ULA) Atlas V rocket on Sept. 27, 2021. Credit: NASA
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Each loop in this video represents approximately 10 Earth hours or one Jupiter day, approximating what it would look like if the Great Red Spot were constantly illuminated. By analysing this set of data from the NASA/ESA Hubble Space Telescope, researcher
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A Kuaizhou-1A rocket launched the Jilin-1 Gaofen 02D satellite from Jiuquan Satellite Launch Center in northwest China on Sept. 27, 2021. It was the first launch of a Kuaizhou-1A rocket since it failed to deliver the Jilin-1 Gaofen 02C satellite into orbi
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More information and download options: http://esahubble.org/videos/potw2139a/Credit:NASA & ESA Music: zero-project - Through the Looking Glass (zero-project.gr)
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More information and download options: http://esahubble.org/videos/potw2137a/Credit:NASA & ESAMusic: Stellardrone - Stardome
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More information and download options: http://esahubble.org/videos/potw2138a/Credit:NASA & ESA Music: Stellardrone - Billions and Billions
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The NASA and USGS Landsat program has a long history of observing Earth from space. Take a look back. -- Landsat 9, NASA's most powerful Landsat satellite ever, is 'go' for launch: https://www.space.com/nasa-landsat-9-earth-observation-satellite-go-for-la
Spain's Volcano Fountain, Planetary Retrograde City, the Dangerous Mid-October Hurricane & ChristmasAdded 10 Views / 0 Likes
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Landsat 9, set to launch in Sept. 2021, will deliver the 'highest quality data ever recorded by a Landsat satellite," according to NASA's Goddard Space Flight Center. Credit: NASA's Goddard Space Flight Center
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NASA Perseverance rover science team member Eva Scheller talks about SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals) and what it has discovered so far on Mars. Credit: NASA JPL-Caltech
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The Inspiration4 crew splashed down in the Atlantic Ocean, the Shenzhou-12 crew touched down in China, the Tianzhou-3 cargo spacecraft docked to the new Chinese space station, dashcam footage of a fireball over Slovenia helped track down fragments of it,
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A Hubble Space Telescope of a galaxy in the constellation Fornax has revealed "d one of the most complete Einstein rings ever discovered," according to NASA's Goddard Space Flight Center. Video credit: NASA's Goddard Space Flight Center Paul Morris: Lead
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NASA'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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The crew of SpaceX's Inspiration4 mission were amazed as they opened the hatch of the new Cupola window on the Crew Dragon Resilience. -- SpaceX's private Inspiration4 crew returns to Earth with historic splashdown: https://www.space.com/spacex-inspiratio