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)
-
05:39
Tsunami Advisory for American Samoa after Hunga Tonga Volcano eruption releases massive Shockwave.
Added 198 Views / 0 LikesThis is one of the scariest volcano eruptions i've ever seen during my time at THORnews. God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patr
-
01:01
Aurora Photographer's Headlamp Mimics Lighting In Time-Lapse Video
Added 717 Views / 0 LikesChad Blakley (lightsoverlapland.com) captured the Northern Lights over Lake Torneträsk and Abisko National Park in Sweden on Nov. 7th, 2013. His red headlamp moving across the scene created a lightning-like effect.
-
02:36
Space to Ground: A Star to Steer By: 08/10/2018
Added 157 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 #spacetoground to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss
-
07:34
Spacewalker’s ‘Action Cam’ Captures Spectacular Views - Raw Video
Added 429 Views / 0 LikesSpacewalker’s ‘Action Cam’ Captures Spectacular Views - Raw Video
-
01:49
Starship | SN10 | High-Altitude Flight Recap
Added 287 Views / 0 LikesOn March 3, Starship serial number 10 (SN10) completed SpaceX’s third high-altitude flight test of a Starship prototype as it successfully ascended, transitioned propellant, and reoriented itself for reentry and an active aerodynamic controlled descent. S
-
00:30
Pan: ‘S’ is for ‘Spiral’, ‘AB’ is for … ‘Weakly Barred’
Added 47 Views / 0 LikesThis glittering image shows the spiral galaxy IC 5332, which lies about 30 million light-years away in the constellation Sculptor, and has an almost face-on orientation to Earth. IC 5332 is quite an intermediate spiral galaxy on many fronts: weakly barred
-
02:09
NASA's OSIRIS-REx spacecraft will steer autonomously to Asteroid Bennu's surface
Added 389 Views / 0 LikesNASA's OSIRIS-REx mission will utilize autonomous optical navigation to steer it self to the surface in order to grab some samples of Asteroid Bennu. -- Learn more about OSIRIS-REx: https://www.space.com/33776-osiris-rex.htmlCredit: NASA Goddard Space Fli
-
01:22
See Artemis 1 Earthsets and the crescent moon in epic Orion time-lapses
Added 93 Views / 0 LikesNASA's Artemis 1 mission's Orion spacecraft captured amazing views of the Earthset as the moon passed in front of it on flight day 6. On flight day 8, the spacecraft captured a view of itself with the crescent moon. Artemis 1's Orion spacecraft sees Earth
-
10:12:30
WATCH LIVE: United Launch Alliance to Launch USSF-8 Payload aboard Atlas-V for US Space Force!
Added 157 Views / 0 LikesUnited Launch Alliance will Launch a classified payload for the US Space Force. Liftoff is scheduled on Wednesday, January 21, 2022 at 2 PM EST from the SLC-41, Cape Canaveral SFS, Florida, United States► Become a YouTube member https://www.youtube.com/ch
-
01:07
Bright Fireball Streaks Over New Mexico | Video
Added 754 Views / 0 LikesA fireball was picked up by the New Mexico State University meteor camera on October 19, 2013. (looped)
-
08:02
Return of the Sun Dragon 818! Take all Weird Weather Watches up 3 notches!
Added 376 Views / 0 LikesThe Sun Dragon has returned. All Planets on the Same side of the Sun.Mercury Stations.The DATA really speaks for itself. This is Astonisher & Asteroid Fight Clublate weekend night material. We will cover it again tomorrow afternoonwith some clarity & narr
-
07:49
Red Dragon Divide & Conquer Days - a Starlord NEWTHOR7 Earthlog Stardate Entry
Added 633 Views / 0 LikesRed Dragon Divide & Conquer Days - a Starlord NEWTHOR7 Earthlog Stardate Entry
-
01:29
Perseverance leaves helicopter cover behind in latest pics from Mars
Added 210 Views / 0 LikesPerseverance drove away from the Ingenuity helicopter debris cover that it dropped and it can be seen in the distance in a new pic from Mars. The rover also captured more imagery of Jezero Crater on March 22, 2021 (Sol 31).Credit: Space.com | imagery & au
-
01:46
In Space Production Applications (InSPA)
Added 53 Views / 0 LikesEnsuring U.S. leadership of in-space manufacturing in low Earth orbit by enabling the use of the ISS National Laboratory to demonstrate the production of advanced materials and products for terrestrial markets. Learn more about InSPA: https://www.nasa.gov
-
01:13
Moon Transits Sun from Spacecraft's Point of View | Video
Added 728 Views / 0 LikesNASA's Solar Dynamics Observatory was treated to another lunar transit on Dec 2, 2013. The SDO team compiled the very best views from different imagers onboard the spacecraft. -- Breathtaking Sun footage from the spacecraft here: http://goo.gl/Qz4Chm Cred
-
02:33
Mars Fooled Astronomers for 300 Years – from: 'Mars Calling' film
Added 432 Views / 0 LikesGood astronomers have made bad errors, imagining life and civilization on Mars. Each new generation of observers saw what they expected – or wished – not what was actually there. A few scientists weren’t fooled. But, even with modern rovers on the surface
-
08:21
Monster Storm spreads continues to torment South & East with Giant Hail & Damaging Winds, floods
Added 524 Views / 0 LikesMonster Storm spreads continues to torment South & East with Giant Hail & Damaging Winds, floods
-
02:02
Watch SpaceX deploy Starlink satellites in stunning 'sunrise' view from space
Added 206 Views / 0 LikesSpaceX deployed sixty Starlink 22 mission satellites shortly after launch on March 24, 2021. Watch the launch replay here: https://www.space.com/spacex-starlink-22-satellites-launch-rocket-landing-successCredit: SpaceX
-
01:07
Webb and Hubble telescopes deliver mind-boggling view of huge galaxy cluster
Added 50 Views / 0 LikesA composite of galaxy cluster known as MACS0416 has been created using James Webb Space Telescope and Hubble Space Telescope imagery. The cluster is located about 4.3 billion light-years away. NASA, ESA, CSA, STScI, J. Diego (Instituto de Física de Cantab