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)
-
01:24
Perseverance sees Sun and more in latest pics from Mars
Added 236 Views / 0 LikesSee some of the imagery acquired from Perseverance on Feb. 28, 2021, the rover's Martian sol 9. -- 'Harbor Seal Rock' on Mars and other new sights intrigue Perseverance rover scientists: https://www.space.com/mars-harbor-seal-rock-perseverance-rover-panor
-
Post-Flight News Conference for ISS Expedition 69 Flight Engineer Frank Rubio of NASA
Added 51 Views / 0 Likes -
01:04
Watch the Pine Island Glacier give birth to a huge iceberg in satellite imagery
Added 288 Views / 0 LikesThe Pine Island Glacier in Antarctica recently gave birth to an iceberg relative in size to the country of Malta. The footage was captured by the Copernicus Sentinel-1 mission. Credit: ESA
-
00:44
Spacewalk to Upgrade Station Power Systems
Added 501 Views / 0 LikesSpacewalk to Upgrade Station Power Systems
-
24:20
Catastrophic Mid-West USA Flooding, Depopulation Plans, the Media & Politicians
Added 310 Views / 0 Likesthe battle for the future is now.God bless everyone,Thttps://www.paypal.me/THORnews
-
04:13
JSC Year in Review 2021
Added 137 Views / 0 LikesAs we wrap up the year, celebrate the achievements of NASA’s Johnson Space Center in 2021! Get a behind-the-scenes look at astronaut training and Mission Control. Journey to the International Space Station and see science in microgravity and breathtaking
-
07:34
Freak Hurricane Joaquin & the East Coast Rainball - Where is it going?
Added 613 Views / 0 LikesFreak Hurricane Joaquin & the East Coast Rainball - Where is it going?
-
04:40
The giant storm growing across the USA now seems strange, weird & extra colorful.
Added 476 Views / 0 LikesThe giant storm growing across the USA now seems strange, weird & extra colorful.
-
10:48
Signs in the Heavens! Palm Trees on Mars? Sunspots! Geomagnetic Storms! Solar Flares! Auroras!
Added 218 Views / 0 LikesThe Heavens have been lit in March.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
01:02
Asteroid 2023 TV3 to give Earth a close shave, closer than moon!
Added 49 Views / 0 LikesAsteroid 2023 TV3 will fly about 51,000 miles away (~82,000 km) from Earth on Oct. 12, 2023, It is estimated to be about 10.6 meters wide (35 feet). Credit: Space.com | orbit animation: NASA/JPL-Caltech | edited by Steve Spaleta (https://twitter.com/steve
-
19:12
Wild World Asteroid Fight Club Update: Be Prepared for it to get Weirder.
Added 323 Views / 0 LikesBe Prepared for it to get weirder.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
04:19
NASA's Artemis 1 moon rocket is "go" for propellent loading
Added 129 Views / 0 LikesNASA's Artemis 1 rocket is go for liquid hydrogen and oxygen loading for its Nov. 15, 2022. How to watch Artemis 1 launch live: https://www.space.com/nasa-artemis-1-moon-mission-go-for-launch-watch-liveCredit: NASA
-
07:34
Would a Brown Dwarf in our Solar System "Cook" Earth?
Added 587 Views / 0 LikesWould a Brown Dwarf in our Solar System "Cook" Earth?
-
02:09
Space-Grown Crystals Offer Clarity on Parkinson's Disease
Added 357 Views / 0 LikesParkinson’s disease affects more than 5 million people on Earth. Research on the International Space Station could provide insight into this chronic neurodegenerative disease and help scientists find ways to treat and prevent it. In this video, NASA astro
-
01:03
Watch a red supergiant star go supernova in this stunning animation
Added 141 Views / 0 LikesA red supergiant star transitions into a type II supernova in this animation. Credit: W. M. Keck Observatory/Adam Makarenko | mash mix by Space.com's [Steve Spaleta](http://www.twitter.com/stevespaleta)
-
03:43
Living in Space and Spacewalking - ISS Astronaut Talks to Space.com
Added 534 Views / 0 LikesLiving in Space and Spacewalking - ISS Astronaut Talks to Space.com
-
09:01
See SpaceX's 21st 60-satellite Starlink launch. rocket landing too!
Added 204 Views / 0 LikesA SpaceX Falcon 9 rocket launched 60 new Starlink satellites on March 11, 2021 from Space Launch Complex 40 at Cape Canaveral Space Force Station. Minutes later, the rocket's reusable first stage returned to Earth for its sixth landing, touching down on S
-
01:10
SpaceX fires up single Starship 26 engine in deorbit burn test at Starbase
Added 46 Views / 0 LikesSpaceX conducted a static fire test of a single Starship 26 engine on Oct. 20, 2023. The test demonstrated "flight-like startup for a Starship deorbit burn," according to SpaceX.Credit: SpaceX | edited by Space.com's Steve Spaleta (https://twitter.com/ste