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)
-
08:14
Soyuz with film crew flies around space station in these amazing views
Added 163 Views / 0 LikesThe Soyuz MS-19 spacecraft carrying Russian actress Yulia Peresild, producer Klim Shipenko and cosmonaut Anton Shkaplerov flew around the International Space Station while over Africa and the Mediterranean Sea ahead of docking on Oct. 5, 2021. [Watch the
-
04:38
Soyuz with Japanese billionaire aboard docks with space station
Added 165 Views / 0 LikesBillionaire Yusaku Maezawa, his production assistant Yozo Hirano and cosmonaut Alexander Misurkin docked with International Space Station aboard Russia's Soyuz MS-20 spacecraft on Dec. 8, 2021. -- Watch the launch: https://www.space.com/soyuz-ms20-maezawa
-
02:47
Soyuz's automated rendezvous system corrects misalignment prior to space station dock
Added 297 Views / 0 LikesRussia Progress 76 mission's Soyuz spacecraft successfully docked to the International Space Station a few hours after launching from the Baikonur Cosmodrome in Kazakhstan on July 23, 2020. The spacecraft was slightly misaligned shortly prior to docking b
-
05:59
Space & Earth Weather: 3-23-2022
Added 129 Views / 0 Likeswoot.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
-
13:01
Space 'BFR' Spaceship: Elon Musk Takes You Under the Hood
Added 598 Views / 0 LikesSpace 'BFR' Spaceship: Elon Musk Takes You Under the Hood
-
01:01
Space 'Ping Pong' - Astronaut Plays With Ball Of Water | Video
Added 596 Views / 0 LikesSpace 'Ping Pong' - Astronaut Plays With Ball Of Water | Video
-
24:21
Space Chat! 'Dune' goes to space, Mars helicopter survives blackout and SpaceX Starship
Added 178 Views / 0 LikesToday (Oct. 22) at 1 p.m. EDT (1700 GMT), Space Chat will explore what's new in space, including "Dune" in space, a Martian blackout and SpaceX's Starship roaring to life.Every Friday at 1 p.m. EDT (1800 GMT), Chelsea Gohd hosts Space Chat, which you can
-
24:47
Space Chat! 'Ring of Fire' Eclipse Thrills Stargazers
Added 182 Views / 0 LikesThis week, Space.com senior writer Chelsea Gohd will be talking and taking questions about this week's annular solar eclipse, or "ring of fire" eclipse which took place on Thursday (June 10). This discussion will include a special interview with Jackie Fa
-
15:08
Space Chat! (Part Deux) Let's Talk SpaceX's Inspiration4 & MORE
Added 222 Views / 0 Likes*Thank you for your patience during the technical difficulties in our first attempt of today's episode!!!* This week, Space.com senior writer Chelsea Gohd will be discussing and answering questions about commercial space initiatives like Inspiration4 whic
-
16:50
Space Chat! A powerful solar storm disrupts Earth, SpaceX waits to launch and more
Added 145 Views / 0 LikesToday (Nov. 5), Space Chat will explore what's new in space, including new climate science, SpaceX's new astronaut launch and a seriously powerful solar storm.Every Friday at 1 p.m. EDT (1800 GMT), Chelsea Gohd hosts Space Chat, which you can find live on
-
08:53
Space Chat! A Special Tribute To Astronaut Micheal Collins
Added 202 Views / 0 LikesIn this special episode of Space Chat, senior writer Chelsea Gohd talks about the life and legacy of NASA astronaut Michael Collins, who passed away on Apr. 28, 2021 at the age of 90. From the Gemini program to Apollo 11 and beyond, this so called 'forgot
-
32:40
Space Chat! All things James Webb Space Telescope
Added 157 Views / 0 LikesFriday (Dec. 17), a special episode of Space Chat will cover all things James Webb Space Telescope! Every Friday at 1 p.m. EDT (1800 GMT), Chelsea Gohd hosts Space Chat, which you can find live on Space.com's VideoFromSpace YouTube, Facebook and Twitter p
-
19:46
Space Chat! Blue Origin prepares to launch, Virgin Galactic & crazy space science
Added 226 Views / 0 LikesToday (July 16), Today (July 16), Space Chat will explore what's new in space, including Blue Origin and Virgin Galactic's suborbital spaceflights, giant megacomets and more!Every Friday at 1 p.m. EDT (1800 GMT), Chelsea Gohd hosts Space Chat, which you c
-
17:46
Space Chat! Blue Origin sues NASA, wildfires rage & Jupiter shines
Added 147 Views / 0 LikesToday (Aug. 20), Space Chat will explore what's new in space, including Blue Origin's latest lawsuit, raging wildfires and spectacular skywatching. Every Friday at 1 p.m. EDT (1800 GMT), Chelsea Gohd hosts Space Chat, which you can find live on Space.com'
-
18:48
Space Chat! Enter Apophis...
Added 175 Views / 0 LikesThis week, Space.com senior writer Chelsea Gohd will be taking a deep dive into the weird world of near-Earth asteroids like Apophis, which will NOT impact Earth within the next 100 years (at least).Also, we will be talking SpaceX’s Crew-2 mission next Fr
-
40:05
Space Chat! Exploring black holes
Added 220 Views / 0 LikesTODAY at 1p EDT (10a PT/ 1800 GMT) Space.com senior writer Chelsea Gohd will be talking and taking your questions about black holes, tackling queries like "What are black holes? How do they form? What dangers could they present?"Every Friday at 1 p.m. EDT
-
26:10
Space Chat! Hubble, Virgin Orbit and UFO’s!
Added 158 Views / 0 LikesChelsea Gohd will explores what’s new in space, including Hubble repairs, a Virgin Orbit launch and the Pentagon’s UFO report. More: https://www.space.com/space-chat-live-with-spacedotcom.html
-
00:37
Space Chat! Hubble, Virgin Orbit and UFO’s!
Added 185 Views / 0 LikesTODAY (July 2), Chelsea Gohd will explore what’s new in space, including Hubble repairs, a Virgin Orbit launch and the Pentagon’s UFO report.Join us and ask all your questions about these latest events!More: https://www.space.com/space-chat-live-with-spac
-
20:46
Space Chat! Inspiration4 launches, Chinese astronauts land and more
Added 174 Views / 0 LikesToday (Sept. 17), Space Chat will explore what's new in space, including the successful launch of Inspiration4, the landing of Chinese astronauts back on Earth, some strange science and so much more!Every Friday at 1 p.m. EDT (1800 GMT), Chelsea Gohd host
-
19:19
Space Chat! International Involvement In Space
Added 98 Views / 0 LikesTODAY Space.com senior writer Chelsea Gohd will be talking and taking questions about the many different space programs around the world and their various space missions. From Roscosmos to India's ISRO, China's CSNA, New Zealand's Rocket Lab and so many m