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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59:23 New
NASA's SpaceX Crew 9 Mission Overview News Conference
Added 3 Views / 0 LikesLeaders from NASA and SpaceX presented an overview of NASA’s SpaceX Crew-9 mission launch to the International Space Station during a mission overview briefing July 26. The Crew-9 mission will carry NASA astronauts Zena Cardman, Nick Hague, and Stephanie
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02:14 New
Space station crew 'pretends' to be Olympic athletes to celebrate the summer games
Added 2 Views / 0 LikesThe International Space Station crew has Olympic fever as the world prepares for the Summer Olympics. Credit: NASA
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X14 flare detected on far side of Sun! Spacecrafts see massive CME
Added 2 Views / 0 LikesA massive X14-class solar flare was detected on the far side of the sun by Europe's Solar Orbiter on July 23, 2024. The STEREO-A and SOHO spacecrafts captured views of the ensuing coronal mass ejection. Credit: Space.com | footage courtesy; NASA/ESA/SOHO/
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02:56 New
Brightest Gamma-Ray Burst Of All Time had a curious feature, NASA Fermi finds
Added 2 Views / 0 LikesThe Brightest Gamma-Ray Burst Of All Time (BOAT) was detected using NASA's Fermi Space Telescope in 2022. A study of the data has revealed a never-before-seen feature. Credit: NASA Goddard Space Flight Center
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03:02 New
Space to Ground: Star Sailors: July 26, 2024
Added 2 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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EXTRA DEFENSE! Things are Super Weird & getting Super Weirder. Fires! Hurricanes! Wars! Politics!
Added 2 Views / 0 LikesThank you for being you& being with me on this wild journey together.Stay cool & Smoke 'em if you got 'em.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:52 New
Gobal carbon monoxide modeled in amazing NASA visualization
Added 2 Views / 0 LikesSee the scope of global carbon monoxide emissions in this visualization created by NASA's Goddard Space Flight Center. Credit: NASA/GSFC
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33:34 New
NASA’s SpaceX Crew-9 Training Resource Reel
Added 3 Views / 0 LikesNASA’s SpaceX Crew-9 mission will carry four people to the International Space Station for a long-duration science expedition. NASA astronauts Zena Cardman, Nick Hague, and Stephanie Wilson, as well as Roscosmos cosmonaut Aleksandr Gorbunov trained for th
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14:22 New
NASA Astronaut Don Pettit Training Resource Reel
Added 3 Views / 0 LikesNASA astronaut Don Pettit launches to the International Space Station this September aboard the Roscosmos Soyuz MS-26 spacecraft. After his arrival to the space station, he’ll become a flight engineer of the Expedition 71/72 crew. Pettit trained for his m
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01:15 New
Classified Space Force satellite to launch atop Atlas V! See the USSF-51 flight profile
Added 5 Views / 0 LikesA United Launch Alliance Atlas V rocket will launch the classified USSF-51 mission for the US Space Force. See the flight profile here. Credit: ULA
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RED ALERT! Hurricane Watch for the Start of August is ON!
Added 6 Views / 0 LikesYou are amazingand i appreciate you.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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Pan: NGC 3810
Added 7 Views / 0 LikesMeasuring the distance to truly remote objects like galaxies, quasars and galaxy clusters is a crucial task in astrophysics, particularly when it comes to studying the early Universe, but it’s a difficult one. Only in the case of a few nearby objects like
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Pan: NGC 5238
Added 5 Views / 0 LikesThe galaxy featured in this week’s Hubble Picture of the Week is the dwarf irregular galaxy NGC 5238, located 14.5 million light-years from Earth in the constellation Canes Venatici. Its unexciting, blob-like appearance, resembling more an oversized star
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01:30 New
Zoom into interacting galaxies Arp 142
Added 7 Views / 0 LikesThis video takes the viewer on a journey through space to the interacting galaxies known as Arp 142.The distorted spiral galaxy at the centre, the Penguin, and the compact elliptical galaxy at the left, the Egg, are locked in an active embrace. A new near
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Transition video of interacting galaxies Arp 142 (NIRCam image + MIRI and NIRCam image))
Added 6 Views / 0 LikesThis video features two views of the interaction galaxies Arp 142. First shown is the NIRCam image, followed by the combined NIRCam and MIRI image.The distorted spiral galaxy at the centre, the Penguin, and the compact elliptical galaxy at the left, the E
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00:30 New
Pan of Interacting galaxies Arp 142 (NIRCam and MIRI image)
Added 4 Views / 0 LikesThe distorted spiral galaxy at the centre, the Penguin, and the compact elliptical galaxy at the left, the Egg, are locked in an active embrace. A new near- and mid-infrared image from the James Webb Space Telescope, taken to mark its second year of scien
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00:57 New
James Webb Space Telescope discovers a cool super-Jupiter exoplanet
Added 6 Views / 0 LikesA video zooms in on Eps Ind Ab a super Jupiter which is old and cold. The discovery signals a new era of exoplanet hunting.Credit: T. Müller (MPIA/HdA), E. Matthews (MPIA)Music: Through Stormy Weather by Philip Ayers / courtesy of http://www.epidemicsound
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00:20 New
Pioneering space exercise study on a parabolic flight!
Added 5 Views / 0 LikesA flywheel exercise device for the Artemis 2 round-the-moon mission undergoes testing during a Falcon 20 parabolic flight in Canada in July 2024. Using the device is Yannick Laflamme, an exercise specialist in operational space medicine with the Canadian
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Added 7 Views / 0 LikesThis time-lapse shows the core stage for Artemis 2, an astronaut round-the-moon mission, arriving in the vicinity of NASA's Kennedy Space Center in Florida on July 23, 2024 after a journey from another agency facility in New Orleans. On July 24, they bega
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China fires up moon rocket engine for future crewed missions
Added 5 Views / 0 LikesChina test fired a three-stage hydrogen-oxygen engine that will be used on a next-generation moon rocket for crew. Credit: China Central Television (CCTV)