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)
-
03:58
Space Engineers Monitor the Environment to Prevent Disaster
Added 29 Views / 0 LikesJoin our space engineers on an interstellar journey armed with DIY tools from the spacecraft. Witness the challenges in monitoring and adapting to fluctuating radiation and temperature, when swift action is crucial for survival. Explore how modern technol
-
01:59
Space to Ground: CRS-30: March 22, 2024
Added 29 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
-
08:33
Blastoff! Russian Soyuz rocket launches crew to space station
Added 29 Views / 0 LikesA Soyuz rocket carrying NASA's Tracy C. Dyson, Oleg Novitskiy and Marina Vasilevskaya launched to the International Space Station from the Baikonur Cosmodrome in Kazakhstan on March 23, 2024. Broadcast courtesy: NASA
-
03:06
5.8 Earthquake strikes California during a barrage of Solar Flares!
Added 29 Views / 0 LikesEclipse season 2024: day 2 - stay cool.God bless everyone.Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
04:19
Watching a SpaceX launch from NASA mission control in Houston - Raw video
Added 29 Views / 0 LikesSpace.com's Elizabeth Howell was inside mission control at NASA's Johnson Space Center during a SpaceX launch.
-
09:06
RED ALERT! Wave after Wave after Wave of BIG STORMS on the Way for Eclipse Season!
Added 29 Views / 0 LikesYou are awesome.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
01:58
RED ALERT! Two Big Storms & a Nor'easter* type thing in next 100 hours!
Added 29 Views / 0 Likes+ speedy little Mercury goes retrograde.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
01:49
To Make Life Multiplanetary
Added 29 Views / 0 LikesThe goal of SpaceX is to build the technologies necessary to make life multiplanetary. This is the first time in the 4-billion-year history of Earth that it’s possible to realize that goal and protect the light of consciousness.At Starbase on Thursday, Ap
-
01:56
2024 solar eclipse! Totality over Ohio, New York and Maine in 2-minute time-lapse
Added 29 Views / 0 LikesSee totality occur over Ohio, New York and Maine in these time-lapsed views. Live Updates: https://www.space.com/news/live/solar-eclipse-live-updatesCleveland, OhioCredit: Salvatore Oriti of NASA Glenn Research CenterTupper Lake, New YorkCredit: Seth McGo
-
08:51
SpaceX launches Starlink batch on booster's record-breaking 20th flight, nails landing
Added 29 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink satellites from Florida's Cape Canaveral Space Force Station on April 12, 2024. It was the 20th liftoff for this particular Falcon 9 first stage, according to a SpaceX mission description, setting a new reusab
-
03:37
Roscosmos spacewalk to be conducted outside Space Station
Added 29 Views / 0 LikesThis animation discusses the upcoming spacewalk in which Roscosmos cosmonauts Oleg Kononenko and Nikolai Chub of the Expedition 71 crew will egress the Poisk airlock to complete the deployment of one panel on a synthetic radar system on the Nauka module a
-
17:39
Blastoff! Rocket Lab launches 4 satellites, booster splashes down in Pacific
Added 28 Views / 0 LikesA Rocket Lab Electron launched from New Zealand launch site on Jan. 31, 2023 at 1:34 a.m. EST (0634 GMT; 7:34 p.m. local New Zealand time). It was carrying four space situational awareness (SSA) satellites for Montreal company NorthStar Earth & Space. [Fu
-
01:12
Record-breaking quaser's growth is equivalent to 'one Sun per day'
Added 28 Views / 0 LikesThe brightest quasar discovered to date is growing at an amazing pace. European Southern Observatory's Very Large Telescope (VLT) has been used to study it. Credit: ESO
-
00:43
2023 Annual Highlights of Results from the International Space Station
Added 28 Views / 0 LikesThe International Space Station is a microgravity research lab hosting groundbreaking technology demonstrations and scientific investigations. More than 3,700 investigations conducted to date have generated more than 4,000 research articles published in s
-
01:52
Meet Roscosmos Cosmonaut Alexander Grebenkin, Crew-8 Mission Specialist
Added 28 Views / 0 LikesRoscosmos Cosmonaut Alexander Grebenkin is a mission specialist for NASA’s SpaceX Crew-8 mission. Grebenkin, who graduated from Irkutsk High Military Aviation School, Irkutsk, Russia, majoring in engineering, maintenance, and repair of aircraft radio navi
-
02:15
Space to Ground: Crew-8, Arriving: March 8, 2024
Added 28 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
-
03:04
NASA's Europa Clipper is carry 'inspirational messages' to the Jovian moon
Added 28 Views / 0 LikesNASA's Europa Clipper will be carrying engraved inspirational messages, a "silicon microchip stenciled with more than 2.6 million names," and more. Credit: NASA/JPL-Caltech
-
10:49
Splashdown! SpaceX Dragon with Crew-7 returns to Earth after 6 months in space
Added 28 Views / 0 LikesNASA's SpaceX Crew-7's Jasmin Moghbeli, Andreas Mogensen, Satoshi Furukawa, and Konstantin Borisov are back on Earth after splashing down off the coast of Florida on March 12, 2024. Full Story: https://www.space.com/nasa-spacex-crew-7-astronauts-return-to