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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04:28
Crew-2 Mission Overview
Added 245 Views / 0 LikesNASA’s SpaceX Crew-2 mission to the International Space Station is ready to launch. Join NASA’s Shane Kimbrough and Megan McArthur, Aki Hoshide of the Japan Aerospace Exploration Agency (JAXA), and Thomas Pesquet of ESA (European Space Agency) as they tal
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01:10
See Ingenuity kick up Martian dust during first flight in new looks
Added 194 Views / 0 LikesNASA has enhanced the Perseverance Mastcam-Z video showing how dust was kicked up during the first flight of the Ingenuity helicopter on Mars. -- NASA's Ingenuity helicopter aced an 'absolutely beautiful flight' on Mars: https://www.space.com/mars-helicop
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02:26
NASA Lucy mission target asteroid has a satellite! New Hubble discovery
Added 221 Views / 0 LikesOne of the targets of NASA's Lucy mission, Eurybates, has a small satellite orbiting it according to new observations by the Hubble Space Telescope. That brings up the mission's goal of studying 7 asteroids to 8. Credit: NASA Goddard Space Flight Center
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03:35
Quick Questions with Crew-2
Added 159 Views / 0 LikesFour astronauts, from three countries, flying Crew-2, to the one and only International Space Station. Now that we have the basic facts, let’s explore. The astronauts about to launch on NASA’s SpaceX Crew-2 mission didn’t flinch when subjected to rapid-fi
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05:55
Ingenuity's first flight on Mars reconstructed + footage explained by NASA
Added 212 Views / 0 LikesThe Mars helicopter Ingenuity made its first flight on Mars on April 19, 2021. The helicopter's chief pilot Håvard Fjær Grip talks about the video, images and an animated reconstruction of the flight. Credit: NASA
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01:05
See the SpaceX Crew-2 rocket on the pad in awesome drone video
Added 192 Views / 0 LikesThe SpaceX Falcon 9 that will launch the Crew-2 astronauts to the International Space Station is seen on the launch pad in Florida in this drone video footage. These 4 Crew-2 astronauts are ready to ride a SpaceX rocket into orbit: https://www.space.com/s
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14:09
M Class Earth directed Solar Flare & Wild Weather on the Way for Weeks!
Added 232 Views / 0 LikesWARNING: the solar energy has me a bit spicy.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornewsspacecowboy2017@gmail.com
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03:03
See Ingenuity's entire flight on Mars in Perseverance Mastcam-Z video
Added 202 Views / 0 LikesThe Ingenuity helicopter has completed its first flight on Mars! See video of the flight in its entirety from the Perseverance rover. Credit: Space.com | footage courtesy: NASA/JPL-Caltech/ASU/MSSS | produced & edited by Steve Spaleta (http://www.twitter.
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02:07
Ingenuity's first flight on Mars! See the highlights in video & pics
Added 234 Views / 0 LikesThe Ingenuity helicopter has completed its first flight on Mars. See imagery and video from the Perseverance rover and Mars helicopter. Full Story: https://www.space.com/mars-helicopter-ingenuity-first-flight-successCredit: Space.com | footage courtesy: N
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07:04
Ingenuity helicopter flies on Mars!! See the first pic & video
Added 222 Views / 0 LikesThe Ingenuity helicopter has completed its first flight on Mars on April 19, 2021. See the first image and video acquired by NASA from the flight. Credit: NASA/JPL-Caltech
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13:14
Cold snap & snow! Florida rain! Big Storm=27th!!! Caribbean Volcano erupts again! Typhoon Sarigae
Added 236 Views / 0 Likesyall are awesome.T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornewsspacecowboy2017@gmail.com
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01:09
Remember fidget spinners? See one spin in space!
Added 210 Views / 0 LikesNASA brought a fidget spinner to the International Space Station a few years ago. See it in action here. Credit: NASA/Johnson Space Center
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04:27
SpaceX Starship chosen by NASA to land astronauts on Moon
Added 218 Views / 0 LikesNASA's Human Landing System program has picked SpaceX to develop the lander for Artemis. [Full Story](https://www.space.com/spacex-wins-nasa-artemis-moon-lander-contest)Credit: NASA
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01:37
Mars helicopter's flight date set after delay - See its blades spin!
Added 224 Views / 0 LikesNASA will attempt the first flight of Ingenuity as early as Monday (April 19), after it was delayed by a timer glitch during a preflight test. See footage of the helicopter's blades spinning and its deployment to the surface combined with Martian wind aud
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08:22
Super Typhoon Surigae! South Flood USA! Geomagnetic Storms! 3 Sunspots! CME! Snow! Volcanoes!
Added 230 Views / 0 Likescongratulations, you will probably survive Eris week.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
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03:22
Mars helicopter test flight status updated by NASA
Added 207 Views / 0 LikesNASA Ingenuity's flight was delayed earlier this week, but NASA has been running tests on the Mars helicopter. Ingenuity Chief Engineer Bob Balaram gives an updated. Also, Perseverance Project Scientist Ken Farley talks about the MOXIE experiment. Credit:
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11:55
Touchdown! Soyuz MS-17 crew safely lands in Kazakhstan
Added 193 Views / 0 LikesSergey Ryzhikov and Sergey Kud-Sverchkov from Roscosmos and Kate Rubins of NASA landed on the steppe of Kazakhstan on April 17, 2021 aboard Russia's Soyuz MS-17 spacecraft. They spent 185 days on the International Space Station. Full Story: https://www.sp
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02:41
Know Your Crew...Two!
Added 87 Views / 0 LikesShane Kimbrough, Megan McArthur, Aki Hoshide, and Thomas Pesquet are about to fly NASA’s SpaceX Crew-2 mission to the International Space Station. Before their launch, we brought them in the studio to test what they know about each other – and what they t
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04:52
SpaceX Crew-2 astronauts arrive in Florida ahead of launch
Added 224 Views / 0 LikesNASA's Shane Kimbrough and Megan McArthur, JAXA astronaut Akihiko Hoshide and ESA's Thomas Pesquet landed at NASA's Kennedy Space Center in Florida on April 16, 2021 ahead of their April 22 SpaceX Crew Dragon launch attempt. -- Meet Crew-2: The 4 space-bo
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17:09
Space Chat! Mars Helicopter Ingenuity Takes Center Stage
Added 201 Views / 0 LikesToday at 2:00p ET (11a PT/1800 GMT), Space.com senior writer Chelsea Gohd will be taking a deep dive into Mars helicopter Ingenuity, which is expected to lift off the the Martian ground sometime next week!