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)
-
24:47
Space Chat! 'Ring of Fire' Eclipse Thrills Stargazers
Added 179 Views / 0 LikesThis week, Space.com senior writer Chelsea Gohd will be talking and taking questions about this week's annular solar eclipse, or "ring of fire" eclipse which took place on Thursday (June 10). This discussion will include a special interview with Jackie Fa
-
00:30
Webb's view of NGC 1559
Added 31 Views / 0 LikesThis video features a new image of the barred spiral galaxy galaxy NGC 1559 as seen by the NASA/ESA/CSA James Webb Space Telescope. The galaxy hosts a visible central region with a distinct open pattern in the loosely-wound spiral arms. NGC 1559 resides a
-
05:48
Video from Space - Weekly Highlights: Week of May 24, 2020
Added 335 Views / 0 LikesVideos featured: 'Ring of fire' galaxy created by galactic smash-up, Japan's HTV-9 spacecraft arrives at the International Space Station, weather threatens and scrubs NASA's SpaceX Demo-2 launch, Saffire IV experiment on the Cygnus spacecraft sets cloth a
-
02:10
Space to Ground: You talkin' to me?? : 03/11/2016
Added 560 Views / 0 LikesSpace to Ground: You talkin' to me?? : 03/11/2016
-
05:40
Red Alert! Massive Explosion at Ohio Metal Plant! Major ICE Storm Coming! Meteors light up Kansas!
Added 90 Views / 0 LikesIt's a good time to pray for peace & stability.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
05:02
SpaceX Launches AsiaSat With Falcon 9 Rocket | Video
Added 698 Views / 0 LikesSpaceX Launches AsiaSat With Falcon 9 Rocket | Video
-
02:50
Space to Ground: Tending the Hive: 06/21/2019
Added 154 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
-
3:16:18
Watch Live! China's Shenzhou 13 crew returns to Earth
Added 131 Views / 0 LikesThe Shenzhou 13 astronauts Zhai Zhigang (commander), Wang Yaping and Ye Guangfu are returning to Earth after over 170 days in space. Touchdown will occur anytime between 8pm-12pm EDT on April 15 (08:00-12:00 BJT - April 16) at the Dongfeng landing site in
-
00:31
SpaceX Testing - SuperDraco Engine Firing
Added 499 Views / 0 LikesSpaceX successfully test fires SuperDraco, a powerful new engine that will play a critical role in efforts to change the future of human spaceflight. These engines will power a revolutionary launch escape system that will make Dragon the safest spacecraft
-
40:05
Space Chat! Exploring black holes
Added 216 Views / 0 LikesTODAY at 1p EDT (10a PT/ 1800 GMT) Space.com senior writer Chelsea Gohd will be talking and taking your questions about black holes, tackling queries like "What are black holes? How do they form? What dangers could they present?"Every Friday at 1 p.m. EDT
-
Watch Live! SpaceX Falcon 9’s Launch of the Transporter-10 Mission
Added 42 Views / 0 LikesThe company's Transporter-10 mission is scheduled to liftoff at 5:05 p.m. ET (2205 GMT) on Monday (March 4) from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base in California. If today's launch is delayed, a backup opportunity is scheduled
-
11:49
RED ALERT! Texas & Gulf States prepare for a Category 2 Hurricane landfall around the 7th* of June
Added 363 Views / 0 LikesThis storm is going to be a monster size, that drops a monster amount of rain and i am worried that it could eject from CAG sooner than estimated.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://ve
-
07:28
Billions of Barrels of Oil MISSING! + a Phantom Price SPIKE! The great economic mystery* of 2016.
Added 565 Views / 0 LikesBillions of Barrels of Oil MISSING! + a Phantom Price SPIKE! The great economic mystery* of 2016.
-
Starlink Mission
Added 64 Views / 0 LikesSpaceX is targeting Monday, February 27 at 11:31 a.m. PT (19:31 UTC) for a Falcon 9 launch of 51 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. If needed, there is an addition
-
00:51
Spectacular Spitfire Erupts From Sunspot | Video
Added 661 Views / 0 LikesSpectacular Spitfire Erupts From Sunspot | Video
-
36:53
Insane Hail, Volcanoes, Record Heat, Record Cold & Hawaii watch
Added 342 Views / 0 LikesHappy July, y'all. We've got a full solar eclipse coming up, so buckle up and get ready for a wild month. God bless everyone, TT Lewison5430 Birdwood Rd. #416Houston Texas 77096https://www.paypal.me/thornewsthe crankywxguy bloghttp://www.stormhamster.com/
-
10:19
The Sun continues to Light It Up on Peace Pipe day!
Added 134 Views / 0 LikesHappy Easter* week, y'all!God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
00:59
Multi-Angle: Grasshopper 12-Story Test Flight 12/17/12
Added 429 Views / 0 LikesSpaceX's Grasshopper takes a 12-story leap towards full and rapid rocket reusability in a test flight conducted December 17, 2012 at SpaceX's rocket development facility in McGregor, Texas. Grasshopper, a vertical takeoff and landing vehicle (VTVL), rose
-
02:13
Listen to Perseverance snap a selfie with Ingenuity! How did the Mars rover do that?
Added 175 Views / 0 LikesNASA explains how NASA's Perseverance rover captures selfies. Also,listen to the sounds it picked up while the camera moved to capture the images of the iconic Perseverance and Ingenuity selfie on Mars. Credit: NASA/JPL-Caltech
-
04:34
RED ALERT! Tornadoes on the ground in Kansas! & More Severe Weather on the way for the USA!
Added 32 Views / 0 Likesyou are awesome.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews