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)
-
02:49
Relive the historic Artemis 1 moon rocket launch in these NASA highlights
Added 136 Views / 0 LikesNASA's Artemis moon launched on its maiden journey to moon on Nov. 16, 2022. See hihglights of the launch from pad, spacecraft and mission control.Credit: NASA
-
01:12
Spectacular Spitfire Snapped By Two Spacecraft | Video
Added 520 Views / 0 LikesSpectacular Spitfire Snapped By Two Spacecraft | Video
-
04:31
What’s Going on at ESA in 2019?
Added 302 Views / 0 LikesThe European Space Agency has a full docket in 2019 - here are some highlights. Credit: ESA
-
01:07
See SpaceX's Starship launch tower in amazing drone video
Added 180 Views / 0 LikesSpaceX has constructed a 'launch & catch' tower for Starship in Boca Chica, Texas. See drone footage of the facility. Full Story: https://www.space.com/spacex-starship-launch-tower-elon-musk-videoCredit: Elon Musk / SpaceX | edited by Space.com's Steve Sp
-
13:33
Nate is now a Hurricane & could intensify to Category 3 by Landfall
Added 428 Views / 0 LikesNate is now a Hurricane & could intensify to Category 3 by Landfall
-
08:07
Red Alert! Texas Tornadoes & Colorado Blizzard today & Tomorrow! Big Storm #2 Wed/Thur & #3 the 25th
Added 221 Views / 0 LikesTwo weeks of wild weather are at the Door.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
-
01:01
Alert! DFW TEXAS. 2-5 inches of rain possible over next few hours! Drive safe & stay cool.
Added 67 Views / 0 Likes -
01:56
Behind the Spacecraft – Perseverance – The Next Mars Rover
Added 416 Views / 0 LikesSending a rover to the Red Planet is more than just 3…2…1… Liftoff! ???? It takes 1,000s of people and years of hard work to get a spacecraft from Earth to Mars. So when NASA’s Perseverance rover touches down on the Martian surface, it will be because of
-
08:11
The Oldest Planet in the Milky Way? Found between 2 White Dwarf Stars!?!
Added 689 Views / 0 LikesThe Oldest Planet in the Milky Way? Found between 2 White Dwarf Stars!?!
-
CRS-26 Mission Control Audio
Added 109 Views / 0 LikesThis is the vehicle trajectory and mission control audio without any additional commentary. There may be very long periods of silence. For our full hosted webcast, visit https://www.spacex.com/launches/
-
03:21
Strange Holes In Venus' Atmosphere Investigated | Video
Added 675 Views / 0 LikesStrange Holes In Venus' Atmosphere Investigated | Video
-
00:37
This Early Universe Quasar Visualization is Mesmerizing
Added 363 Views / 0 LikesDistant quasar J043947.08+163415.7 was discovered using gravitational lensing. It is the brightest object yet discovered in the early Universe. Credit: ESA/Hubble, NASA, M. Kornmesser
-
10:23
SpaceX launches 49 Starlink satellites, nails booster landing at sea
Added 176 Views / 0 LikesSpaceX launched 49 new Starlink satellites from Pad 39A at NASA's Kennedy Space Center in Florida on Jan. 18, 2022. The first stage of the Falcon 9 rocket landed on the "A Shortfall of Gravitas" drone ship minutes later in the Atlantic Ocean. Credit: Spac
-
01:50
Space to Ground: Quick Work: 10/13/2017
Added 519 Views / 0 LikesSpace to Ground: Quick Work: 10/13/2017
-
09:00
Hot fire! NASA SLS megarocket's core stage tested for over 8 minutes
Added 189 Views / 0 LikesNASA test-fired the core stage of the Space Launch System rocket on March 18, 2021 at NASA's Stennis Space Center in Mississippi. The test lasted 499 seconds. Credit: NASA
-
02:04
Touchdown! China's Shenzhou 16 crew lands back on Earth after 5 months on Tiangong space station
Added 59 Views / 0 LikesShenzhou 16 taikonauts Jing Haipeng, Zhu Yangzhu and Gui Haichao returned to Earth from the Tiangong space station on Oct. 30, 2023 (Oct. 31 - Beijing time). Their spacecraft touched down at the Dongfeng landing site in north China's Inner Mongolia Autono
-
01:02
Air pollution over locked down Italy drops in satellite data.
Added 351 Views / 0 LikesAir pollution from nitrogen dioxide emissions is declining over Italy according to Copernicus Sentinel-5P satellite data from Jan. 1-Mar. 11, 2020Credit: Space.com / Credits: contains modified Copernicus Sentinel data (2020), processed by ESA, CC BY-SA 3.
-
10:24
420 THORnews Technical Difficulties - Scientists develop Mammal Embryos in Space!
Added 608 Views / 0 Likes420 THORnews Technical Difficulties - Scientists develop Mammal Embryos in Space!
-
04:39
RED ALERT! Red Bullseye storm over Southern USA & World's Largest* Volcano is now Erupting in Hawaii
Added 97 Views / 0 LikesCrazy day, indeed.Stay cool & be safe.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews