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)
-
04:30
RED ALERT! 4 of the next 7 Days will have Severe Weather! + Multiple Solar Storms & CMEs!
Added 74 Views / 0 LikesI hope you are doing welland you had a great weekend.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
03:55
2019 Solar Eclipse Begins! Moon Takes First Bite Out of Sun
Added 331 Views / 0 LikesThe European Southern Observatory is capturing imagery of the solar eclipse from its La Silla Observatory in Chile. Watch 2 different views of the start of the eclipse. -- Here's the First Image from the Only Total Solar Eclipse of 2019: https://www.space
-
01:17
Apollo 16 moon landing site visualized using orbiter imagery
Added 170 Views / 0 LikesA visualization of the Apollo 16 moon landing site has been created using imagery from NASA's Lunar Reconnaissance Orbiter (LRO). NASA's Goddard Space Flight Center delivers a tour of the site here. Learn about Apollo 16: https://www.space.com/17505-apoll
-
01:30
Grasshopper 250m Test | Natural Sound
Added 526 Views / 0 LikesSpaceX's Grasshopper flies 820 feet, tripling its March 7th leap. Grasshopper is a 10-story Vertical Takeoff Vertical Landing (VTVL) vehicle that SpaceX has designed to test the technologies needed to return a rocket back to Earth intact. While most rocke
-
06:55
Space Station Live: A MinION to Space Station
Added 502 Views / 0 LikesSpace Station Live: A MinION to Space Station
-
00:54
Water Bears on space station! Tardigrade experiment will study how they adapt
Added 182 Views / 0 LikesTardigrades were shipped to the International Space Station aboard the SpaceX CRS-22 mission. Learn why the microscopic creatures made the trip. Credit: NASA/Ames Research Center
-
01:46
How To Wash Your Hands In Space | Video
Added 780 Views / 0 LikesISS Commander Chris Hadfield shows us the fine points of manual digital hygiene in microgravity. A clean-handed astronaut is a happy astronaut. -- Life in Space: Astronaut Chris Hadfield's Video Guide: http://goo.gl/fdgcgU
-
00:30
Pan of LEDA 42160
Added 30 Views / 0 LikesThis image shows LEDA 42160, a galaxy about 52 million light-years from Earth in the constellation Virgo. The dwarf galaxy is one of many forcing its way through the comparatively dense gas in the Virgo cluster, a massive cluster of galaxies. The pressure
-
05:36
18z GFS MODEL MADNESS = BIG Category 1 Hurricane hits Florida June 8th 2020
Added 352 Views / 0 LikesTHIS IS NOT A FORECAST.It's just 1 happy hour run.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
-
14:33
Blastoff! NASA's SpaceX Crew-6 launches to space station
Added 83 Views / 0 LikesA SpaceX Falcon 9 rocket launched the Crew-6 mission from Kennedy Space Center in Cape Canaveral, Florida on March 2, 2023. Aboard Crew Dragon Endeavour are NASA astronauts Warren "Woody" Hoburg and Stephen Bowen, the United Arab Emirates' Sultan Al-Neyad
-
02:03
Highlights of Science Launching on SpaceX CRS 18 - July 8, 2019
Added 309 Views / 0 LikesDozens of scientific experiments are scheduled to travel to the International Space Station aboard a Dragon cargo spacecraft in late July. This 18th SpaceX Commercial Resupply Services (CRS) contract mission for NASA blasts off from Cape Canaveral Air For
-
04:08
Apollo 17 moonwalker talks SpaceX Crew-4 launch
Added 135 Views / 0 LikesApollo 17's Harrison Schmitt was invited to SpaceX Crew-4 launch by astronaut Jessica Watkins. He gives his reaction to watching her launch aboard Crew Dragon Freedom. Watch the launch: https://www.space.com/spacex-crew4-astronaut-launch-successCredit: Sp
-
00:47
OTD in Space – February 9: Great Meteor Procession of 1913
Added 424 Views / 0 LikesOTD in Space – February 9: Great Meteor Procession of 1913
-
04:59
Monthly ISS Research Video Update for August 2015
Added 552 Views / 0 LikesMonthly ISS Research Video Update for August 2015
-
01:09
China launches 4 satellites atop Long March 2D rocket
Added 207 Views / 0 LikesA Long March-2D rocket launched 4 satellites, including Beijing-3, HISEA-2 and YW-1, from the Taiyuan Satellite Launch Center in northern Shanxi Province on June 11, 2021. Credit: Space.com | footage courtesy: China Central Television | produced & edited
-
15:54
Original Star Trek Galileo Spacecraft - Where Is It Today? | Video
Added 766 Views / 0 LikesThe TV prop builder, Gene Winfield, 'beams' back to the time of construction to recount the backstory of the ship. It is currently being restored, more info about the project can be found at www.galileorestoration.com.
-
00:30
Pan: I Zwicky 18 (I Zw 18)
Added 25 Views / 0 LikesThe NASA/ESA/CSA James Webb Space Telescope has captured a spectacular view of the galaxy I Zwicky 18 (I Zw 18) in this new image. The galaxy was first identified by Swiss astronomer Fritz Zwicky in the 1930’s and resides roughly 59 million light-years fr
-
01:19
Boom! SpaceX Starship SN4 explodes during latest round of testing
Added 317 Views / 0 LikesSpaceX SN4 protoytpe exploded shortly after a static fire test on May 29, 2020. Credit: Spadre.com / mash mix by Space.com's Steve Spaleta (http://www.twitter.com/stevespaleta)
-
02:27
Twitter is broken*.
Added 64 Views / 0 Likeshave a great day!God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews