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)
-
00:53
BepiColombo spacecraft's sounds from Space: Earth approach data sonified
Added 329 Views / 0 LikesIn April 2020 ESA's BepiColombo spacecraft flew by Earth for a gravity assist maneuver. Data captured by Italian Spring Accelerometer (ISA) aboard the spacecraft during the approach has been sonified. -- Here's what scientists heard when Mercury-bound Bep
-
01:12
See the remains of an exploded white dwarf star that was first seen in the year 185
Added 74 Views / 0 LikesIn the year 185 A.D., Chinese astronomers spotted a supernova and dubbed it the "guest star." The National Science Foundation’s (NSF) Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory in Chile has recently captured imagery of s
-
01:05
3D-Printed Platinum Spacecraft Thruster Passes Hot-Fire Tests | Video
Added 614 Views / 0 Likes3D-Printed Platinum Spacecraft Thruster Passes Hot-Fire Tests | Video
-
23:38
The Strange 92L Depression TS Storm Hurricane Barry event has Begun! Gulf of Mexico!
Added 321 Views / 0 LikesWARNING: I was still grumpy & there is cussing & opinions.WATCH AT YOUR OWN RISKi'll turn the comments back on when my phone is turned on. Best Case scenario? It disappears like a fart in the wind.Worst Case Scenario? It rages as a Category 5 Hurricane in
-
07:45
Watch SpaceX Crew-4's on-orbit tour of Freedom Dragon spacecraft
Added 132 Views / 0 LikesNASA astronauts Kjell Lindgren, Robert Hines, Jessica Watkins and Samantha Cristoforetti from ESA give a tour of the new SpaceX Crew Dragon Freedom spacecraft during their flight to the International Space Station on April 27, 2022. Watch the launch: http
-
02:18
NASA 2019 Budget Proposal About Exploration, Cuts to Earth Science, WFIRST and More
Added 488 Views / 0 LikesNASA 2019 Budget Proposal About Exploration, Cuts to Earth Science, WFIRST and More
-
01:14
Watch Perseverance drive itself on Mars in 'autonav' mode
Added 189 Views / 0 LikesNASA's Perseverance rover's auto-navigation system was used on Mars. See footage from its left and right navigation camera of the drive and an animation from overhead. Credit: Space.com | imagery & audio courtesy: NASA/JPL-Caltech | produced & edited by S
-
09:13
SpaceX launches 23 Starlink satellites from Cape Canaveral Space Force Station, nails landing
Added 56 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink internet satellites lifted off from Cape Canaveral Space Force Station in Florida on March 25, 2024 at 7:42 p.m. EDT (2342 GMT). Full story: https://www.space.com/spacex-starlink-launch-group-6-46The Falcon 9'
-
01:04
Astrobotic's Griffin lander to deliver VIPER to moon
Added 331 Views / 0 LikesNASA has chosen Pennsylvania-based space company called Astrobotic's Griffin lander to get the the Volatiles Investigating Polar Exploration Rover (VIPER) to the moon. Credit: Astrobotics / mash mix by Space.com's [Steve Spaleta](http://www.twitter.com/st
-
13:20
'Destruct command!' Japan's new H3 rocket fails to deliver payload to orbit
Added 83 Views / 0 LikesJapans' first H3 rocket launch ended with an anomaly that forced JAXA mission control to transmit a 'destruct command' to the vehicle. The rocket launched from the Tanegashima Space Center on March 6, 2023 (0137 GMT on March 7) carrying the Advanced Land
-
02:11
Space to Ground: Smoke and Fire: 10/20/2016
Added 516 Views / 0 LikesSpace to Ground: Smoke and Fire: 10/20/2016
-
07:29
The Big Nibiru Nasa Google Sky Monolith Wormwood Winged Planet X Reveal!
Added 844 Views / 0 LikesThe Big Nibiru Nasa Google Sky Monolith Wormwood Winged Planet X Reveal!
-
21:14
The. Lamest. THORnews. Eclipse. Weather. Video. EVER.
Added 344 Views / 0 Likesit's best to wear shorts in hot temperatures.God bless everyone,T Lewison5430 Birdwood Rd. #416Houston, Texashttps://www.paypal.me/thornews
-
10:53
RED ALERT! 10+ Days of Wild, Wacky Severe Weather & Wildfires ahead for USA!
Added 175 Views / 0 LikesGood morning, you champion!Stay cool.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
02:45
Space to Ground: Successful Spacewalk: 02/23/2018
Added 477 Views / 0 LikesSpace to Ground: Successful Spacewalk: 02/23/2018
-
03:42
5.9 Earthquake hits California & Nevada border 9.8 km deep
Added 195 Views / 0 Likesit's an active day.here is the video i just posted on all the other weather.https://youtu.be/FXVmV9oG7U8God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApph
-
01:48
William Shatner looks forward to solar eclipse in Bloomington, Indiana
Added 44 Views / 0 LikesWilliam Shatner spoke with Space.com and local Indiana media about the upcoming April 8 total solar eclipse and his performance at Indiana University's Hoosier Cosmic Celebration.
-
01:06
Curiosity sees Earth and Venus through dusty Martian twilight
Added 335 Views / 0 LikesNASA's Curiosity rover captured imagery of Earth and Venus on June 5, 2020 during a bright twilight caused by increased dust in the Martian air this time of year. Credit: Space.com / imagery/anaimation courtesy: NASA/JPL-Caltech / produced & edited by Ste
-
01:32
Water detection around star 'supports idea' that Earth's water is older than Sun
Added 119 Views / 0 LikesGaseous water has been detected in the planet-forming disk surrounding the star V883 Orionis (ALMA) using the Atacama Large Millimeter/submillimeter Array. The discovery "supports the idea that water on Earth is even older than our Sun," accoring to the E