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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'Radio loud' quasar's light traveled 13 billion years to Earth
Added 311 Views / 0 LikesThe Very Large Telescope in Chile has detected the "most distant source of radio emission" yet, quasar P172+18, according the European Southern Observatory (ESO). -- Full Story: https://www.space.com/most-distant-radio-loud-quasar-jetsCredit: ESO
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'Reservoirs Rising & In Case of Levee Failures' warns US Army Corps - Houston Texas
Added 548 Views / 0 Likes'Reservoirs Rising & In Case of Levee Failures' warns US Army Corps - Houston Texas
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02:19
'Rifts' discovered in Mars' upper atmosphere by orbiter
Added 389 Views / 0 LikesPortions of Mars' upper atmosphere contain “layers” and “rifts” according to data from NASA’s MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft . Credit: NASA's Goddard Space Flight Center
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'Ring of Fire' Earthquakes & spoken Word poetry
Added 694 Views / 0 Likes'Ring of Fire' Earthquakes & spoken Word poetry
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'Ring of fire' and partial solar eclipse seen by spacecraft
Added 181 Views / 0 LikesWhile parts of Earth were treated to a partial solar eclipse on Oct. 25, 2022. The international Hinode observatory captured an annular 'ring of fire' eclipse, along with views of the partial solar eclipse. It can see an eclipse multiple times on the same
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'Ring of Fire' Annular Solar Eclipse - How to safely view it
Added 130 Views / 0 LikesNASA explains how a safely view a 'ring of fire' annular solar eclipse. Warning: Here is everything you need to know about the annular eclipse in Oct. 2023: https://www.space.com/annular-solar-eclipse-2023-guide-ring-of-fireWARNING: People should always u
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'Ring of fire' Annular Solar Eclipse in US - Where is it visible today?
Added 154 Views / 0 LikesParts of the Unites States will experience an annular solar eclipse on Oct. 14, 2023. This GreatAmericanEclipse.com animation map shows you where. Here is everything you need to know about the annular eclipse in Oct. 2023: https://www.space.com/annular-so
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'Ring of Fire' galaxy formed by galactic smash-up in amazing animation
Added 358 Views / 0 Likes'Ring of Fire' galaxy R5519 has a massive hole created by a galaxy colliding with it. The ring is" making stars at a rate 50 times greater than the Milky Way,” according to lead researcher Tiantian Yuan at the Swinburne University of Technology. -- Full S
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'Ring of Fire' galaxy formed by galactic smash-up in this amazing animation
Added 424 Views / 0 Likes'Ring of Fire' galaxy R5519 has a massive hole that was created by a galaxy colliding with it. The ring is "making stars at a rate 50 times greater than the Milky Way,” according to lead researcher Tiantian Yuan at the Swinburne University of Technology.C
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00:54
'Ring of Fire' Solar Eclipse Captured By Spacecraft | Video
Added 688 Views / 0 Likes'Ring of Fire' Solar Eclipse Captured By Spacecraft | Video
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10:02
'Ring of Fire' Solar Eclipse explained by astrophysicist (with safe viewing tips!)
Added 285 Views / 0 LikesSkywatchers in some parts of the world will be treated to an annular solar eclipse on June 10, 2021. American Museum of Natural History astrophysicist Dr. Jackie Faherty talks to Space.com's Chelsea Gohd about it. 'Ring of fire' eclipse 2021 guide: https:
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'Ring Of Fire' Solar Eclipse In Feb. 2017 - Path It Will Take
Added 698 Views / 0 Likes'Ring Of Fire' Solar Eclipse In Feb. 2017 - Path It Will Take
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04:02
'Ringing' Star Enables Exoplanet’s Exact Diameter Calculation | Video
Added 803 Views / 0 Likes'Ringing' Star Enables Exoplanet’s Exact Diameter Calculation | Video
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00:42
'Rolling Stones Rock' - Rock on the Red Planet Named After Legendary Band
Added 454 Views / 0 LikesOn Aug. 22, 2019, NASA announced that a rock on Mars has been named 'Rolling Stones Rock,' Story: NASA Names Record-Setting Mars Rock After The Rolling Stones: https://www.space.com/mars-rock-named-after-rolling-stones-nasa-insight-lander.htmlCredit: NASA
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'Runaway' star Zeta Ophiuchi studied using Chandra x-ray observatory
Added 258 Views / 0 LikesZeta Ophiuchi is a star that was ejected from its orbit when its companion star exploded. NASA Chandra X-ray Observatory was used to study the aftermath. Credit: NASA/CXC/A. Hobart
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'Search For Another Earth' - Where We Stand and How It Began | Video
Added 656 Views / 0 Likes'Search For Another Earth' - Where We Stand and How It Began | Video
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'Search for the Cosmic Dawn' documentary on MagellanTV - See a preview in 4K
Added 157 Views / 0 LikesThe new documentary "explores new revelations about the origins of the universe," from the James Webb Space Telescope and other observatories. 'Search for the Cosmic Dawn' is now available on MagellanTV: https://www.magellantv.com/video/search-for-the-cos
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'Send Congress to Meet In Space Station' - Fmr. President Clinton Jokes | Video
Added 704 Views / 0 Likes'Send Congress to Meet In Space Station' - Fmr. President Clinton Jokes | Video
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'Shapeshifter' Robots Could One Day Explore Other Worlds
Added 429 Views / 0 Likes'Shapeshifter' is "part drone, part boat, part all-terrain vehicle, and part submarine," according to the NASA. Story: Shapeshifter Robots Could Explore Volcanoes and Caves on Saturn's Moon Titan: https://www.space.com/shapeshifting-robots-explore-saturn-
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'Shark Girl' Madison Stewart Dives to Save Sharks | Exclusive Video Interview
Added 784 Views / 0 Likes'Shark Girl' Madison Stewart Dives to Save Sharks | Exclusive Video Interview