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)
-
02:33
See Uranus, Neptune and Lots of Meteors - December 2014 Skywatching Video
Added 616 Views / 0 LikesSee Uranus, Neptune and Lots of Meteors - December 2014 Skywatching Video
-
04:10
Planets, Perseids and Cygnus in Aug. 2022 skywatching guide
Added 127 Views / 0 LikesFind out where to find Mars, Uranus, Venus, Jupiter and Saturn this month. The Perseid meteor shower peaks on Aug. 12 and the constellation Cygnus give you plenty to look at in August. -- Night sky: What you can see this month: https://www.space.com/16149
-
01:25
See Ingenuity's 13th flight on Mars in its entirety
Added 152 Views / 0 LikesNASA Ingenuity Helicopter traveled at 7.3 mph (3.3 m/s) "taking images pointing southwest of the South Seítah region" and flew 26 feet (8 meters) above the surface of Mars on Sept. 4, 2021, according to NASA's Jet Propulsion Laboratory. Full Story: https:
-
01:12
Bright BlueWalker 3 satellite and Starlink pair seen streaking across night sky
Added 50 Views / 0 LikesSee footage of the extremely bright BlueWalker 3 satellite and a pair of Starlink satellites captured by Marco Langbroek. BlueWalker 3 is officially one of the brightest objects in the night sky: https://www.space.com/bluewalker-3-prototype-satellite-brig
-
02:29
Space to Ground: Open for Business: 06/14/2019
Added 294 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
-
08:26
Space Station Live: 3-D Printing of a Student Design
Added 578 Views / 0 LikesSpace Station Live: 3-D Printing of a Student Design
-
02:22
SpaceX - Falcon 1, Flight 4
Added 507 Views / 0 LikesA short compilation of highlights from flight 4. More information on SpaceX: http://www.spacex.com/ http://twitter.com/spacex http://www.facebook.com/SpaceX
-
46:21
Prepare For 1000 Years Of Peace
Added 309 Views / 0 LikesI think our Atmospheric Planetary Defense got a game changing upgrade in 2019. As Forest Gump would say "one less thing to worry about." Thank you! Team Earth!
-
02:44
Ancient Mars’ Water Action Visualized From Orbiter | Video
Added 672 Views / 0 LikesAncient Mars’ Water Action Visualized From Orbiter | Video
-
12:21
UPDATE: Satellites lost on India's SSLV rocket maiden flight - See the launch
Added 100 Views / 0 LikesIndia's Small Satellite Launch Vehicle (SSLV) blasted off on its maiden flight on Aug. 7, 2022. Shortly after launch, the Indian Space Research Organisation announced that there was data loss "observed during the terminal stage." Full Story: New Indian ro
-
21:16
Inspiration4 | In-Flight Update with the Crew
Added 154 Views / 0 LikesJoin us for the first live, on-orbit update from the Inspiration4 crew – the world’s first all-civilian human spaceflight to orbit! The Inspiration4 mission is part of Jared’s ambitious fundraising goal to give hope to all kids with cancer and other life-
-
03:47
Fly over Mars' 'Noctis Labyrinthus' in this visualization from spacecraft data
Added 54 Views / 0 LikesData from the Mars Express orbiter has been used to create a visualization of "a vast system of deep and steep valleys that stretches out for around 1190 km," on Mars called Noctis Labyrinthus, according to the European Space Agency (ESA).Credit: ESA/DLR/
-
13:46
WARNING! MAJOR Hurricanes for NorthEast USA in September & Florida in October!
Added 307 Views / 0 Likes2017 September 13th - Hurricane Irma - Landfall Florida Keys2018 September 18th - Hurricane Florence - Landfall North Carolina2019 September mid - Hurricane X - Landfall, North East USA2017 October 11th - Hurricane Nate - Landfall Biloxi, Mississippi2018
-
17:41
Rapid Intensification of Hurricane Laura about to begin! East Texas & Louisiana YOU ARE IN DANGER.
Added 393 Views / 0 LikesPlease evacuate if told to. This storm is going to bring major storm surge, flooding and hurricane winds. This thing might even be a category 4/5 BEAST before landfall. Please stay safe.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096
-
03:24
Blastoff! Atlas V Rocket Launches Navy Satellite | Video
Added 647 Views / 0 LikesBlastoff! Atlas V Rocket Launches Navy Satellite | Video
-
54:11
SpaceX CRS-2 Full Webcast
Added 327 Views / 0 LikesOfficial Launch Webcast from SpaceX for the Spacex CRS-2 launch on 3/1/2013. Webcast shot live at SpaceX headquarters in Hawthorne, CA. Highlights: 39:52 - Launch 43:04 - Stage Separation 49:16 - SECO, Second Engine Cutoff 49:56 - Dragon Deploy Visit: htt
-
02:52
Florida Alert! 00z GFS has shifted TD 16 TS Hurricane Nestor WEST!
Added 271 Views / 0 LikesWe've got about 40 Hours until this thing hits. God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornewshttp://www.stormhamster.com/e
-
04:01
Strange Superstars’ Dance Revealed In 3-D | Video
Added 511 Views / 0 LikesStrange Superstars’ Dance Revealed In 3-D | Video
-
07:42
Mystery BOOM over Utah! New York Hurricane* in 100 hours? American Samoa Volcano Warning! TX Flood!
Added 109 Views / 0 Likesi hope you have a super fantastic weekend, y'all.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews