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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02:07
Fermi telescope does not detect gamma-rays from nearby supernova, NASA explains
Added 114 Views / 0 LikesNASA’s Fermi Gamma-ray Space Telescope "detected none of the high-energy gamma-ray light" from a nearby supernova. NASA explains. Credit: NASA Goddard Space Flight Center
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08:57
Blastoff! SpaceX launches Starlink batch from Florida, nails landing
Added 114 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink satellites from Cape Canaveral Space Force Station on May 28, 2024 at 10:24 a.m. EDT (1424 GMT). [Full Story](https://www.space.com/spacex-starlink-launch-group-6-60)According to Space.com, the launch had orig
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01:00
X1.4 flare! Huge sunspot that triggered May's amazing solar storms back at it
Added 114 Views / 0 LikesSunspot AR3697 (formerly AR3664) unleased an X1.4-class solar flare on May 29, 2024. NASA's Solar Dynamics Observatory captured the fireworks. This active region on the sun was responsible for a bevy of powerful flares and a massive solar storm that creat
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01:05
Mars rover's camera hit with charged particles from solar storm
Added 114 Views / 0 LikesThe Mars Curiosity rover had to weather a solar storm on May 20, 2024. Specks seen in the video the rover captured are "caused by charged particles from a solar storm," according to NASA. Full Story: https://www.space.com/mars-aurora-radiation-solar-storm
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02:39
Space to Ground: Flight Test: June 14, 2024
Added 114 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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01:21
Astronomers find most distant merging quasars yet
Added 114 Views / 0 LikesThe Gemini North telescope and Subaru Telescope have been used to discover most distant merging quasars yet, "seen over 900 million years after the Big Bang." according to NoirLab. Credit:Images and Videos: International Gemini Observatory/NOIRLab/NSF/AUR
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00:30
Pan: Serpens Nebula
Added 114 Views / 0 LikesFor the first time, a phenomenon astronomers have long hoped to image directly has been captured by the NASA/ESA/CSA James Webb Space Telescope’s Near-InfraRed Camera (NIRCam). In this stunning image of the Serpens Nebula, the discovery lies in the northe
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09:26
Blastoff! SpaceX launches next-gen US spy satellites from California
Added 114 Views / 0 LikesA SpaceX Falcon 9 rocket launched the NROL-186 mission for the National Reconnaissance Office (NRO) from California's Vandenberg Space Force Base on June 29, 2024 at 11:14 p.m. EDT (8:14 p.m. local California time; 0314 GMT on June 29). Full Story: https:
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04:03
Space to Ground: A Space Community: Sept. 13, 2024
Added 114 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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08:57
Blastoff! SpaceX launches 23 Starlink satellites from Florida, nails landing
Added 114 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink spacecraft — including 12 with direct-to-smartphone capability — from Cape Canaveral Space Force Station on Nov. 25, 2024. Credit: SpaceX
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00:30
Pan of the Orion Bar region
Added 113 Views / 0 LikesAn international team of scientists have used data collected by the NASA/ESA/CSA James Webb Space Telescope to detect a molecule known as the methyl cation (CH3+) for the first time, located in the protoplanetary disc surrounding a young star. They accomp
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00:30
Pan of Same galaxy, different filters
Added 113 Views / 0 LikesThis luminous tangle of stars and dust is the barred spiral galaxy NGC 1385, that lies about 30 million light-years from Earth. The same galaxy was the subject of another Hubble Picture of the Week, but the two images are notably different. This more rece
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Watch live! SpaceX to launch Swedish Ovzon 3 satellite
Added 113 Views / 0 LikesJoin us live for SpaceX's Falcon 9 launch of the Ovzon 3 mission to geosynchronous transfer orbit from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station in Florida.
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00:34
See Uranus' seasonal changes in color! 168-year animated time-lapse
Added 113 Views / 0 Likes"Two Uranus years (one Uranus year is 84.02 Earth years), running from 1900 to 2068 and starting just before southern summer solstice, when Uranus’s south pole points almost directly towards the Sun," have been animated to show seasonal changes, according
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01:35
China reveals names for crewed moon mission spacecraft and lander
Added 113 Views / 0 LikesChina reveals named their crewed moon mission spacecraft "Mengzhou" and the lander "Lanyue." Learn more about it here. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by [Steve Spaleta](https://twitter.com/stevespaleta)
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02:04
2024 Astronaut Graduating Class, "The Flies," Superlatives
Added 113 Views / 0 LikesThe 2024 astronaut graduating class gives you an insider's look at not only the who's who of their graduating class, but it allows you to get a glimpse of the accomplished astronauts’ personalities. To see them together as a group, connecting through laug
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03:04
NASA's Europa Clipper is carry 'inspirational messages' to the Jovian moon
Added 113 Views / 0 LikesNASA's Europa Clipper will be carrying engraved inspirational messages, a "silicon microchip stenciled with more than 2.6 million names," and more. Credit: NASA/JPL-Caltech
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11:11
Blastoff! Rocket Lab launches U.S. spy satellites from Virginia
Added 113 Views / 0 LikesA Rocket Lab Electron rocket launched the NROL-123 mission from the company's Launch Complex 2 (LC-2) at NASA's Wallops Flight Facility in Virginia on March 21, 2024 at 3:25 a.m. EDT (0725 GMT). Full Story: https://www.space.com/rocket-lab-launch-nrol-123
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01:02
NASA's Perseverance rover captures Martian moon Phobos transit the sun - Real-time view!
Added 113 Views / 0 LikesThe Perseverance Mars rover's Mastcam-Z camera the Martian moon Phobos transit the Sun on Feb. 8, 2024. See real-time and time-lapsed views here. Credit: Space.com | NASA/JPL-Caltech/ASU/MSSS/SSI | edited by [Steve Spaleta](https://twitter.com/stevespalet
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06:04
RED ALERT! Another X-Class Flare & BIG Storms coming! + The Lincoln Memorial was on fire.
Added 113 Views / 0 LikesEclipse season 2024 day 4: Stay cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews