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Outer Space & Universe

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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)

 

  • 01:33 NASA's Lucy spacecraft captured stunning view of moon during gravity assist

    NASA's Lucy spacecraft captured stunning view of moon during gravity assist

    by admin Added 106 Views / 0 Likes

    A mosaic has been created using NASA Lucy mission images of the moon that were captured on Oct. 16, 2022. The spacecraft snapped the photos after flying by Earth for a gravity assist. Credit: NASA/Goddard/SwRI/JHU-APL/Tod R. Lauer (NOIRLab) | edited by Sp

  • 03:26 NASA's Lucy spacecraft to flyby asteroid Dinkinesh at 10,000 MPH!

    NASA's Lucy spacecraft to flyby asteroid Dinkinesh at 10,000 MPH!

    by admin Added 69 Views / 0 Likes

    NASA's Lucy mission will flyby asteroid Dinkinesh (aka 1999 VD57) on Nov. 1, 2023. The spaceraft will zip by the Main Belt asteroid at 10,000 mph (16,093 kmh). Credit: NASA Goddard Space Flight CenterProduced, Edited, and Narrated by: David Ladd (AIMM)Ani

  • 01:01 NASA's Mars 2020 Crater Will Land in Jezero Crater

    NASA's Mars 2020 Crater Will Land in Jezero Crater

    by admin Added 414 Views / 0 Likes

    NASA has announced that the Mars 2020 rover will attempt to land in Jezero Crater in early 2021. Credit: Space.com / footage courtesy: NASA/JPL-Caltech/MSSS/JHU-APL / produced and edited by Steve Spaleta http://www.twitter.com/stevespaleta

  • 01:00 NASA's Mars 2020 Rover Takes First Test Drive

    NASA's Mars 2020 Rover Takes First Test Drive

    by admin Added 378 Views / 0 Likes

    Engineers at NASA Jet Propulsion Laboratory completed a test drive of the rover that will head to the Red Planet in 2020. -- NASA's Life-Hunting Mars 2020 Rover Will Search for Alien Microfossils:https://www.space.com/mars-2020-alien-life-hunt-microfossil

  • 02:06 NASA's Mars Ascent Vehicle engines fired up on Earth in tests

    NASA's Mars Ascent Vehicle engines fired up on Earth in tests

    by admin Added 63 Views / 0 Likes

    NASA recently tested the first and second stage engines of the Mars Ascent Vehicle that will be used for a sample return mission. Credit: NASA/Jonathan Deal and Joe Kuner

  • 00:59 NASA's Mars Helicopter Vacuum Chamber Test Flight Successful

    NASA's Mars Helicopter Vacuum Chamber Test Flight Successful

    by admin Added 378 Views / 0 Likes

    NASA tested Mars helicopter technology in the Jet Propulsion Laboratory's Space Simulator. -- More about the test: https://www.space.com/nasa-mars-helicopter-aces-flight-tests.htmlCredit: NASA/JPL-Caltech

  • 31:33 NASA's Mars Ice Challenge Day 1, Part 1

    NASA's Mars Ice Challenge Day 1, Part 1

    by admin Added 401 Views / 0 Likes

    For humans to survive on other worlds, they’ll have to harness the resources – like water – that exist there. A recent competition held at NASA’s Langley Research Center in Hampton, Virginia, aimed to find ways of doing just that.This is an archived versi

  • 28:59 NASA's Mars Ice Challenge Day 1, Part 2

    NASA's Mars Ice Challenge Day 1, Part 2

    by admin Added 386 Views / 0 Likes

    For humans to survive on other worlds, they’ll have to harness the resources – like water – that exist there. A recent competition held at NASA’s Langley Research Center in Hampton, Virginia, aimed to find ways of doing just that.This is an archived versi

  • 28:46 NASA's Mars Ice Challenge Day 2

    NASA's Mars Ice Challenge Day 2

    by admin Added 424 Views / 0 Likes

    For humans to survive on other worlds, they’ll have to harness the resources – like water – that exist there. A recent competition held at NASA’s Langley Research Center in Hampton, Virginia, aimed to find ways of doing just that.This is an archived versi

  • 01:48 NASA's Mars Insight 'Mole' is Stuck - Fixes Proposed

    NASA's Mars Insight 'Mole' is Stuck - Fixes Proposed

    by admin Added 337 Views / 0 Likes

    NASA's Mars Insight probe's 'mole' instrument, which is a a self-hammering spike to dig into the Martian surface, had some issues following deployment. NASA is working on solutions to the problem. Related: InSight Team Gets Look at Stuck 'Mole' on Mars ht

  • 03:58 NASA's Mars InSight lander power running low, science achievements highlighted

    NASA's Mars InSight lander power running low, science achievements highlighted

    by admin Added 133 Views / 0 Likes

    NASA’s InSight lander is losing power but has made many scientific accomplishments since its arrival on the Red Planet in 2018. Here are the highlights. InSight only has few months left:https://www.space.com/mars-lander-insight-ending-low-powerCredit: NAS

  • 04:11 NASA's Mars Perseverance rover - Peek under the hood

    NASA's Mars Perseverance rover - Peek under the hood

    by admin Added 309 Views / 0 Likes

    NASA Jet Propulsion Laboratory's deputy project manager Jennifer Trosper explains some of the differences between Curiosity and Perseverance. Also, see the miles of wiring under the hood of the new Mars rover. -- Perseverance rover will use some of the be

  • 01:03 NASA's Mars Perseverance rover launch seen from space

    NASA's Mars Perseverance rover launch seen from space

    by admin Added 378 Views / 0 Likes

    NOAA's GOES-16 satellite captured imagery of NASA's Perseverance rover mission launch on July 30, 2020. The rover and the Mars helicopter Ingenuity were launched atop a United Launch Alliance Atlas V rocket. -- NASA's Mars 2020 Perseverance rover mission:

  • 02:45 NASA's Mars Sample Return Plan - 2 Rovers, Lander and Orbiter Needed

    NASA's Mars Sample Return Plan - 2 Rovers, Lander and Orbiter Needed

    by admin Added 366 Views / 0 Likes

    NASA is developing plans, in collaboration with the European Space Agency, to collect samples of Mars and return them to Earth. Credit: NASA/JPL-Caltech

  • 15:25 Nasa's Mars' Curiosity Rover ain't broken but it won't do science. for now.

    Nasa's Mars' Curiosity Rover ain't broken but it won't do science. for now.

    by admin Added 389 Views / 0 Likes

    /shrug. it's mars, bro.God bless everyone,Thttps://www.paypal.me/THORnews

  • 10:47 NASA's Martian Solar Killshot Conspiracy Theory

    NASA's Martian Solar Killshot Conspiracy Theory

    by admin Added 669 Views / 0 Likes

    NASA's Martian Solar Killshot Conspiracy Theory

  • 05:06 NASA's massive Artemis 1 moon mission rocket explained

    NASA's massive Artemis 1 moon mission rocket explained

    by admin Added 149 Views / 0 Likes

    Learn about the Space Launch System (SLS) rocket that will propel NASA's Artemis 1 mission to the moon. -- Artemis 1 explained: https://www.space.com/artemis-1-going-back-to-the-moon#section-the-artemis-1-flight-planCredit: NASA

  • 01:09 NASA's massive Artemis 1 rocket on way back to launch pad in time-lapse

    NASA's massive Artemis 1 rocket on way back to launch pad in time-lapse

    by admin Added 141 Views / 0 Likes

    NASA's Artemis 1 rocket was rolled out to Pad 39B at the Kennedy Space Center in Florida on June 6, 2022 for a crucial countdown test. Credit: NASA | mash mix: Space.com Music: Sunday Forecast by Isaac Larson / courtesy of http://www.epidemicsound.com

  • 08:03 NASA's massive crawler transporter! Get up close and personal

    NASA's massive crawler transporter! Get up close and personal

    by admin Added 159 Views / 0 Likes

    Check out the crawler transporter that will carry NASA'a Artemis moon rocket to the launch pad. Full Story: https://www.space.com/nasa-artemis-1-rollout-crawler-transporter-2Credit: ESA

  • 04:07 NASA's Mighty Saturn V Rocket Explained - 'Ask A Spaceman: Science of Apollo'

    NASA's Mighty Saturn V Rocket Explained - 'Ask A Spaceman: Science of Apollo'

    by admin Added 340 Views / 0 Likes

    Space.com presents 'Ask a Spaceman: Science of Apollo' with host astrophysicist Paul Sutter. Learn all about NASA's Saturn V rocket that propelled humanity to the Moon. -- Watch more episodes: https://www.space.com/ask-a-spaceman-science-of-apollo.htmlCre

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