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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01:05
China’s Long March 6C rocket maiden flight launches satellite with umbrella-shaped antenna
Added 18 Views / 0 LikesChina's new Long March 6C rocket launched the Neptune-01 satellite from the Taiyuan Satellite Launch Center on May 7, 2024. Neptune-01 has a umbrella-shaped parabolic antenna for Earth imaging.Credit: Space.com | footage courtesy: China Central Television
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02:34
Space to Ground: Preparing for Guests: May 10, 2024
Added 18 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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08:59 New
SpaceX launches 23 Starlink satellites from Cape Canaveral Space Force Station
Added 18 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink satellites from Florida's Cape Canaveral Space Force Station on May 12, 2024 at 8:53 p.m. EDT (0053 GMT on May 13). [Full Story](https://www.space.com/spacex-starlink-launch-group-6-58)According to Space.com,
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00:30
Pan: Captured on glass
Added 17 Views / 0 LikesThis Hubble Picture of the Week depicts the spiral galaxy ESO 422-41, which lies about 34 million light-years from Earth in the constellation Columba. The patchy, star-filled structure of the galaxy’s spiral arms and the glow from its dense core are laid
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01:12
Sympathetic solar flare! 4 regions on Sun erupt at nearly the same time
Added 17 Views / 0 LikesThree sunspots and a magnetic filament on the sun erupted at nearly the same time on April 23, 2024. This phenomena is known as a "sympathetic solar flare."NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths. Credit: Credit: S
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03:49
See the Crab Nebula and Cassiopeia A in amazing time-lapses that 'span several decades'
Added 17 Views / 0 LikesOver 2 decades of Chandra X-ray Observatory views of the Crab Nebula and Cassiopeia A have been time-lapsed. The Chandra team explains here. Credit: NASA/CXC/A. Hobart
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00:39
Rocket Lab Electron rocket launches NASA solar sail #timelapse #rocketlab
Added 17 Views / 0 LikesA Rocket Lab Electron rocket launched the NEONSAT-1 Earth-observation satellite and NASA's Advanced Composite Solar Sail System (ACS3) from New Zealand on April 23, 2024 at 6:14 p.m. EDT (2214 GMT; 10:14 a.m. on April 24 New Zealand time). Full Story: htt
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04:31
very RED ALERT! a Very Dangerous Today & Week ahead of Severe Weather! + Multiple X-Class Flares!
Added 17 Views / 0 LikesStay safe & stay cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:07
Two Earth-facing sunspots blasting powerful X and M flares, spacecraft views
Added 17 Views / 0 LikesSunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares on May 8, 2024. Both sunspots are Earth-facing and could potentially deliver a solar storm our way. NASA's Solar Dynamics Observatory captured the fireworks.Credit: Space.com |
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08:02
Whoa. Record amount of Intricate Gravity Waves AF RN?
Added 17 Views / 0 Likesyothe atmosphere is wild.wild.stay cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:00
Sunspot erupts again with X2.2 solar flare! Spacecraft views
Added 17 Views / 0 LikesSunspot AR3664 has been very active the last few days. The latest blast was recorded as an X2.2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks.Footage courtesy: NASA / SDO and the AIA, EVE, and HMI science teams / helioviewer.
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10:10
WOW! FIVE Solar Storms headed to Earth! Parade of Near Earth Asteroids! Jade Helm* 2024*! More UFOs!
Added 17 Views / 0 LikesWow. This are wild.But you,You are cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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02:17
Celebrate Earth Day with these views of our planet from NOAA satellites
Added 16 Views / 0 LikesNOAA satellites have kept their eyes on Earth and delivered invaluable data on our changing world. Celebrate Earth Day with these views. Credits:NOAANASACIRAAdditional imagery courtesy of CIMSS.Music: “A Serious Man” by Kavin Hoo [ASCAP]; ELIAS Music; Uni
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01:23
Zoom into Hubble’s view of Dumbbell Nebula for space telescope’s anniversary
Added 16 Views / 0 LikesThe Hubble Space Telescope is celebrating 34 years of service in 2024. See a new view of the Dumbbell Nebula to commemorate the anniversary. Credit: Space.com | NASA, ESA, STScI, A. Pagan (STScI) / Acknowledgment: D. Crowson, A. Fujii, Digitized Sky Surve
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10:57
very RED ALERT! 100* Hours of very SEVERE WEATHER USA! Hurricane Season to start Early? very FLOODY.
Added 16 Views / 0 Likeswowzers,you are cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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09:04
OK. It's getting Weird*. + BIG STORMS USA on the Way!
Added 15 Views / 0 LikesPlease stay cool.God bless everyone!Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:57
Space Sparks Episode 19 — Hubble celebrates its 34th anniversary
Added 15 Views / 0 LikesFor more than three decades the NASA/ESA Hubble Space Telescope has revolutionised modern astronomy, not only for astronomers but also by taking the public on a wondrous journey of exploration and discovery.Each year Hubble dedicates a small portion of it
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06:35
VERY RED ALERT! Rare High Risk Warning for Oklahoma & Kansas for Multiple Giant Dangerous Tornadoes!
Added 15 Views / 0 LikesThis is not a good situation.Please be safe & stay cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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09:03
SpaceX launches 23 Starlink satellites to low-Earth orbit, nails landing
Added 15 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink satellites from NASA's Kennedy Space Center in Florida on May 8, 2024 at 2:42 p.m. EDT (1842 GMT). According to Space.com, the Falcon 9's first stage came back to Earth as planned about 8.5 minutes later, touc