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)
-
01:01
Me & the Red Hot Chili Peppers singing By The Way at Minute Maid Park Houston Texas #peace
Added 80 Views / 0 Likes -
04:44
Me playing a guitar. Be cool. Stay Cool. We are all Family.
Added 613 Views / 0 LikesMe playing a guitar. Be cool. Stay Cool. We are all Family.
-
1:19:18
Me, Guitar & Pluto Saturn Eris Talk.
Added 337 Views / 0 LikesThis is a celebration.Good vibes only.T
-
03:38
Me. The Sun. & How to make Chocolate Milk
Added 398 Views / 0 LikesMe. The Sun. & How to make Chocolate Milk
-
05:01
Measuring the expansion rate of the Universe - Hubble constant tension explained
Added 64 Views / 0 LikesLearn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight Center.Credit: NASA's Goddard Space Flight Center Producer & Director: James LeighEditor: Lucy LundDirector of Photography: James BallA
-
01:36
Medusa Nebula’s 'Writhing Hair + Glowing Glare' Is Irresistible | Video
Added 695 Views / 0 LikesMedusa Nebula’s 'Writhing Hair + Glowing Glare' Is Irresistible | Video
-
01:46
Meet 'Blue Moon' - Blue Origin's Lunar Lander Animated
Added 377 Views / 0 LikesPrivate spaceflight company Blue Origin has introduced their "Blue Moon" lunar lander on May 9, 2019 -- Space.com was at the unveiling: https://www.space.com/blue-origin-reveals-blue-moon-lander.html Credit: Blue Origin
-
00:34
Meet 'Rosie' - Boeing Starliner's Test Dummy That Will Fly to Space Station
Added 335 Views / 0 LikesBoeing held a dedication ceremony for "Rosie," prior to its launch to the International Space Station aboard a Starliner CST-100 capsule. "Rosie" is named after "Rosie the Riveter." Story: Rosie, a Bandana-Clad Test Dummy https://www.space.com/boeing-star
-
03:17
Meet Andreas Mogensen, Crew-7 Pilot
Added 67 Views / 0 LikesCrew-7’s pilot is Andreas Mogensen, the Copenhagen, Denmark native who was selected as an ESA (European Space Agency) astronaut in 2009 and became the first Danish citizen in space after launching aboard a Soyuz for a 10-day mission to the space station i
-
00:31
Meet Astrobee! NASA's autonomous worker-bot
Added 47 Views / 0 LikesAstrobee is an autonomous robot that was developed at NASA's Ames Research Center. Credit; The Orbital Space
-
03:34
Meet Bob Hines, Crew-4 Pilot
Added 120 Views / 0 LikesIt was an innate desire to explore that led Bob Hines into the Air Force, and now has him poised for his first trip to space as the pilot on NASA’s SpaceX Crew-4 mission to the International Space Station. Hear the story of his childhood in an Army family
-
01:08
Meet Danuri! Korea Pathfinder Lunar Orbiter that SpaceX will launch
Added 96 Views / 0 LikesThe Korea Pathfinder Lunar Orbiter, called Danuri, will launch to the moon atop a Falcon 9 rocket in Aug. 2022. Learn more about the joint Korea Aerospace Research Institute's (KARI) and NASA mission. Full Story: https://www.space.com/danuri-korea-pathfin
-
00:58
Meet Dragonfly! NASA's Rotorcraft Lander Mission to Titan
Added 320 Views / 0 LikesOn June 27, 2019, NASA announced a new mission to Saturn's moon Titan featuring a rotorcraft lander.Credit: NASA
-
03:36
Meet Hera the 'asteroid detective' in this cute animated short
Added 147 Views / 0 LikesESA's Hera mission will explore the double asteroid system Didymos. The mission also will use a pair of cubesats named Juventas and Milani to study the space rocks. Credit: ESA/Science Office
-
03:11
Meet Jasmin Moghbeli, Crew-7 Commander
Added 62 Views / 0 LikesMeet your Crew-7 commander, Jasmin Moghbeli, the New York native making her first trip into space after being selected as a NASA astronaut in 2017. Moghbeli earned her bachelor’s degree in aerospace engineering with information technology at the Massachus
-
03:00
Meet Jessica Watkins, Crew-4 Mission Specialist
Added 110 Views / 0 LikesA belief that exploration expands the boundaries of who we are as people, and unites us all at the same time, is why Jessica Watkins is so excited for her first spaceflight on NASA’s SpaceX Crew-4 mission to the International Space Station. Join her for t
-
02:52
Meet Josh Cassada, Crew-5 Pilot
Added 87 Views / 0 LikesHe’s already a particle physicist and a Navy combat pilot, but this is a first for Josh Cassada: his first trip to space. The pilot on NASA’s SpaceX Crew-5 mission to the International Space Station explains how his varied background led him to become an