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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)

 

  • 04:35 Down to Earth – A Perfect Planet

    Down to Earth – A Perfect Planet

    by admin Added 599 Views / 0 Likes

    In this episode of Down to Earth, NASA Astronaut Andrew Morgan speaks about his spacewalk experiences, and discusses the importance of caring for our home planet. #SpaceStation20th Video produced at the NASA Johnson Space CenterProducer/Editor: Jamie Quin

  • 01:08 NASA chooses SpaceX Starship for propellant transfer demonstration

    NASA chooses SpaceX Starship for propellant transfer demonstration

    by admin Added 115 Views / 0 Likes

    SpaceX will partner with NASA's Glenn Research Center and Marshall Space Flight Center to demonstrate propellant transfer between tanks on a Starship. Credit: Space.com / animation courtesy: SpaceX / produced & edited by Steve Spaleta (http://www.twitter.

  • 02:44 NASA DuAxel rover prototype is a 'transformer'

    NASA DuAxel rover prototype is a 'transformer'

    by admin Added 111 Views / 0 Likes

    NASA DuAxel rover can split into two parts to explore different types of terrain. It's a "pair of two-wheeled rovers," according to NASA's Jet Propulsion Laboratory. Credit: NASA/JPL-Caltech

  • 01:25 Crewed Soyuz spacecraft docks with space station in time-lapse video

    Crewed Soyuz spacecraft docks with space station in time-lapse video

    by admin Added 117 Views / 0 Likes

    Kate Rubins of NASA, along with Sergey Ryzhikov and Sergey Kud-Sverchkov of Roscosmos, docked with the International Space Station aboard a Soyuz MS-17 spacecraft only 3 hours after launch on Oct. 14, 2020. -- Watch the launch: https://www.space.com/soyuz

  • 03:17 Blastoff! NASA astronaut launches to ISS on her birthday with crewmates

    Blastoff! NASA astronaut launches to ISS on her birthday with crewmates

    by admin Added 116 Views / 0 Likes

    NASA astronaut Kate Rubins, along with Russian cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov, launched to the International Space Station aboard a Russia's Soyuz MS-17 spacecraft on Oct. 14, 2020. Credit: NASA

  • 04:49 Preparing for launch! NASA's Kate Rubins talk new space station mission

    Preparing for launch! NASA's Kate Rubins talk new space station mission

    by admin Added 69 Views / 0 Likes

    NASA astronaut Kate Rubins talks about her new International Space Station mission with Space.com's Chelsea Gohd. Rubin's was in Star City, Russia at the time of the interview. Credit: Space.com

  • 02:40 Kate Rubins: Science on the Space Station

    Kate Rubins: Science on the Space Station

    by admin Added 67 Views / 0 Likes

    Kate Rubins is both a scientist and a NASA astronaut. There is no better place to be than the International Space Station for someone with those two occupations. In this video, Kate explains how the space station is the perfect place to conduct research.

  • 01:43 Tour Blue Origin's crew capsule - 'Everyone gets a window seat'

    Tour Blue Origin's crew capsule - 'Everyone gets a window seat'

    by admin Added 60 Views / 0 Likes

    Blue Origin takes you inside their New Shepard crew capsule, sporting the "largest windows that have ever flown in space."Credit: Blue Origin

  • 01:10 Spacesuits for the Next Explorers:  Preview Trailer 3- New Car Smell

    Spacesuits for the Next Explorers: Preview Trailer 3- New Car Smell

    by admin Added 55 Views / 0 Likes

    When does a spacesuit smell like a new car? When it’s brand new! NASA is creating a new spacesuit for missions to the Moon and beyond. With improved mobility, flexibility and endurance the suit will allow astronauts to do more exploration than ever before

  • 12:06 Blue Origin launches 12 commercial payloads, nails landings

    Blue Origin launches 12 commercial payloads, nails landings

    by admin Added 57 Views / 0 Likes

    Blue Origin New Shepard spacecraft will launched on a suborbital flight on Oct. 13, 2020. It carried 12 commercial payloads including the Deorbit, Descent, and Landing Sensor Demonstration with NASA’s Space Technology Mission Directorate. Credit: Blue Ori

  • 35:15 Vibration, Frequency & Attitude

    Vibration, Frequency & Attitude

    by admin Added 58 Views / 0 Likes

  • 01:04 Blastoff! China launches Gaofen-13 Earth observation satellite

    Blastoff! China launches Gaofen-13 Earth observation satellite

    by admin Added 53 Views / 0 Likes

    A Chinese Long March-3B rocket launched the Gaofen-13 Earth observation satellite from the Xichang Satellite Launch Center in China on Oct. 11, 2020. Credit: Space.com / footage courtesy: China Central Television / produced & edited by [Steve Spaleta](htt

  • 01:29 Light blast from black hole 'spagettifying' a star spotted by ESO

    Light blast from black hole 'spagettifying' a star spotted by ESO

    by admin Added 59 Views / 0 Likes

    A burst of light from tidal disruption event AT 2019qiz, located in the constellation of Eridanus, has been detected using European Southern Observatory telescopes. A star is being devoured by a black hole in the region. Credit: ESO

  • 11:27 21st century Flat-Earthers? 'What?' Bill Nye talks science and exploration

    21st century Flat-Earthers? 'What?' Bill Nye talks science and exploration

    by admin Added 54 Views / 0 Likes

    Planetary Society CEO Bill Nye talks to Space.com's Chelsea Gohd about the importance of space exploration and planetary science amidst anti-science rhetoric online. - Bill Nye teams up with 4-H to 'take students to Mars: https://www.space.com/bill-nye-4-

  • 05:07 Incredible Jupiter flyover created from NASA Juno imagery

    Incredible Jupiter flyover created from NASA Juno imagery

    by admin Added 58 Views / 0 Likes

    Imagery from a June 2, 2020 flyover of Jupiter by NASA's Juno mission has been compiled by Kevin M. Gill to create this flyover. The spacecraft was "approximately 2,100 miles (3,400 kilometers) of Jupiter’s cloud tops," according the Juno team. -- Juno: T

  • 08:34 Bill Nye is 4-H's STEM Challenge ambassador - Exclusive interview

    Bill Nye is 4-H's STEM Challenge ambassador - Exclusive interview

    by admin Added 60 Views / 0 Likes

    Planetary Society CEO Bill Nye is the new STEM challenge ambassador for youth mentoring organization 4-H. Nye talks to Space.com's Chelsea Gohd about it. -- Story-: Bill Nye teams up with 4-H to 'take students to Mars: https://www.space.com/bill-nye-4-h-m

  • 3:03:13 DEFCON WTF

    DEFCON WTF

    by admin Added 66 Views / 0 Likes

  • 10:17 Hurricane Delta & the October Eris storm.

    Hurricane Delta & the October Eris storm.

    by admin Added 62 Views / 0 Likes

    May God protect the people of Louisiana.God bless everyone,T

  • 04:55 Video from Space - Weekly Highlights: Week of Oct. 4, 2020

    Video from Space - Weekly Highlights: Week of Oct. 4, 2020

    by admin Added 61 Views / 0 Likes

    Videos featured: 'SS Kalpana Chawla' Cygnus spacecraft was captured by station station, a new study on why Arrokoth is so flat was released, SpaceX launched and deployed sixty Starlink satellites, and Hurricane Delta was seen from space. Related stories:

  • 04:54 Asteroid Bennu - Up close and personal in new NASA tour

    Asteroid Bennu - Up close and personal in new NASA tour

    by admin Added 73 Views / 0 Likes

    Get a close look at the asteroid NASA's OSIRIS-REx mission has been studying. The spacecraft will soon attempt to take samples of the space rock and return them to Earth. [Surprise! Asteroid Bennu sports pieces of another space rock](https://www.space.com

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