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)
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00:57
Astronaut Hopes Moon is Next After All-Female Spacewalk
Added 404 Views / 0 LikesNASA astronaut Jessica Meir hopes to one day walk on the moon after completing her goal to spacewalk. Story: NASA Astronauts Make History with 1st All-Woman Spacewalk https://www.space.com/first-all-woman-spacewalk-nasa-success.htmlCredit: NASA
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01:30
See Russian spacewalkers work outside Nauka module
Added 114 Views / 0 LikesRussian cosmonauts Oleg Artemyev and Denis Matveev have begun a spacewalk outside the International Space Station's Nauka multipurpose module on Aug. 17, 2022. Watch live: https://www.space.com/russian-cosmonaut-spacewalk-european-robotic-arm-august-17-20
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01:04
Comet ISON Has Apparent Fling With Asteroid Eros | Video
Added 726 Views / 0 LikesSlooh.com's Canary Islands Observatory captured asteroid 433 Eros seeming to fly with Comet ISON on September 24th, 2013. This 2nd largest near-Earth asteroid -- which has been visited by the NEAR probe -- is traveling faster, along a different orb
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14:30
It is LIT! Crazy Pacific Ocean Activity, 49k Lightning Strikes & Squalling USA storms
Added 398 Views / 0 Likes49,000 Lightning Strikes in last 2 hours.5 Active Cyclones in the Pacific. 1 Active Tropical Storm in the Atlantic. and Storms raking across the USA. It's on like donkey kong. the big lead up to the August 11th Solar Eclipse.Then it's show time.Be ready.G
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16:01
NASA Chief Bill Nelson talks moonshot goal, China and more in exclusive interview
Added 237 Views / 0 LikesNASA adminitrator Bill Nelson talks to Space.com's Chelsea Gohd about delays in NASA's goal to get humans back on the moon and the space agency's relationship with China and Russia.
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06:39
We Don’t Planet: Episode 1 – The Structure of the Sun | Video
Added 470 Views / 0 LikesWe Don’t Planet: Episode 1 – The Structure of the Sun | Video
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03:01
Space to Ground: Following Chris: 09/04/2020
Added 262 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
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01:14
X1.1 solar flare! New sunspot makes presence known with major fireworks
Added 82 Views / 0 LikesNASA Solar Dynamics Observatory captured newly arrived sunspot AR3341 blast a powerful X1.1 solar flare on June 20, 2023. The flare "caused a deep shortwave radio blackout over North America." according to Spaceweather.com. Credit: Space.com | footage cou
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22:31
California Wildfires, Midwest Snow & Major East Coast Wind & Tornado Storm
Added 371 Views / 0 LikesOctober ends with some bangs.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornewscheck out the crankywxguy bloghttp://www.stormha
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11:12
SpaceX and T-Mobile partner to end 'dead zones' - Elon Musk & Mike Sievert explain
Added 84 Views / 0 LikesSpaceX chief engineer Elon Musk and T-Mobile CEO Mike Sievert announce a partnership that employees next generation Starlink satellites to increase connectivity across the globe.The event occurred at SpaceX Stabase facility in south Texas on Aug. 25, 2022
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01:04
Chelyabinsk Meteor Had Shallow Descent | Data Visualization Video
Added 728 Views / 0 LikesLearn more about Chelyabinsk Meteor: http://goo.gl/PBlN1C The space rock that stunned the world in Feb. 2013 had shallow entry into the Earth's atmosphere. Sandia National Laboratories has created a simulation of its effect on the atmosphere.
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22:23
Wild In The City
Added 310 Views / 0 LikesI'm taking a 4 hour summer vacation.God bless everyone.T
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00:30
A Dangerous Dance
Added 119 Views / 0 LikesMore information and download options: http://esahubble.org/videos/potw2140a/Credit:NASA & ESA Music: Stellardrone - The Edge of Forever
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25:05
HARD TRUTH - Planet X, Edgar Cayce Future Maps, Strategic Flooding & the Sunbaby
Added 711 Views / 0 LikesHARD TRUTH - Planet X, Edgar Cayce Future Maps, Strategic Flooding & the Sunbaby
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05:37
NASA astronaut Leland Melvin talks dogs and new Varsity Tutors course
Added 60 Views / 0 LikesSpace.com's Elizabeth Howell and her dog Geordi talk with retired NASA astronaut Leland Melvin and his dogs Zorro and Roux in this exclusive interview. Full Story: https://www.space.com/nasa-astronaut-leland-melvin-black-history-education-dogs-courseCredi
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1:23:09
Starlink Mission
Added 287 Views / 0 LikesSpaceX is targeting Monday, November 11 at 9:56 a.m. EST, 14:56 UTC, for launch of 60 Starlink satellites from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. A backup launch opportunity is available at 9:34 a.m. EST, 14:34