The Universe is majorly comprised of space and time and their contents that encompass planets, stars, galaxies, and all other forms of energy and matter. While the spatial size of the entire Universe remains a question yet to be unveiled, it is, however, possible to measure the size of the observable universe, which has recently been measured to be 93 billion light years in diameter. In various multiverse (which is an abbreviation of the term multiple universes) hypotheses, a universe is one of many causally disconnected constituent parts of a larger multiverse, which subsumes all of space and time and its contents of its own. As a consequence, 'the multiverse' and 'the Universe' are synonymous in such theories. The primal cosmological models of the Universe were developed by the ancient Greeks and Indian philosophers and were geocentric which means that they placed Earth at the center and believed everything to orbit or thrive or periodically occure in accordance to the universal nature of the Earth. Over the centuries, more precise astronomical observations were made with advancement in technology and availability of better equipment which led Nicolaus Copernicus in developing the heliocentric model with the Sun at the center of the Solar System. In developing the law of universal gravitation, Isaac Newton based his research and fundamental formulae upon the works of Copernicus' as well as on Johannes Kepler's laws of planetary motion along with observations made by Tycho Brahe.

In this sub category you can download free PNG images: Universe Learning. In this category "Universe" we have 239 free PNG images with transparent background.

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  Astronaut Photos
  Format: PNG
  Resolution: 1000x1118
  Size: 1003.9KB
  Downloads: 313
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  Black Hole Transparent Background
  Format: PNG
  Resolution: 1285x521
  Size: 289.2KB
  Downloads: 305
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  Jupiter Image
  Format: PNG
  Resolution: 1024x705
  Size: 327.4KB
  Downloads: 302
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  Moon Picture
  Format: PNG
  Resolution: 894x894
  Size: 637.0KB
  Downloads: 302
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  Asteroid Free Download
  Format: PNG
  Resolution: 1600x2912
  Size: 2.0MB
  Downloads: 302
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  Jupiter Clipart
  Format: PNG
  Resolution: 706x720
  Size: 306.1KB
  Downloads: 294
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  Asteroid Photos
  Format: PNG
  Resolution: 800x800
  Size: 293.2KB
  Downloads: 284
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  Asteroid Transparent
  Format: PNG
  Resolution: 1600x2070
  Size: 772.3KB
  Downloads: 283
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  Asteroid File
  Format: PNG
  Resolution: 2400x3394
  Size: 1.1MB
  Downloads: 268
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  Jupiter Transparent Background
  Format: PNG
  Resolution: 800x600
  Size: 511.5KB
  Downloads: 263
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  Mining Photography Asteroids Asteroid Black Monochrome
  Format: PNG
  Resolution: 1915x966
  Size: 662.6KB
  Downloads: 255
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  Asteroid Picture
  Format: PNG
  Resolution: 1024x832
  Size: 882.0KB
  Downloads: 254
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  Playstation Toy Profession Royale Fortnite Battle
  Format: PNG
  Resolution: 554x765
  Size: 478.5KB
  Downloads: 196
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  Specialist Protective Equipment Personal Mission Royale Fortnite
  Format: PNG
  Resolution: 512x512
  Size: 73.4KB
  Downloads: 183
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  Realistic Vector Pic Rocket Download HQ
  Format: PNG
  Resolution: 600x240
  Size: 26.4KB
  Downloads: 100
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  Helmet Astronaut Space Free Photo
  Format: PNG
  Resolution: 781x1023
  Size: 274.8KB
  Downloads: 100
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  Helmet Astronaut Photos Space Free Download PNG HD
  Format: PNG
  Resolution: 639x653
  Size: 466.5KB
  Downloads: 100
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  Picture Art Sci-Fi Free Clipart HD
  Format: PNG
  Resolution: 820x671
  Size: 379.4KB
  Downloads: 99
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  Crescent Moon Free Download PNG HD
  Format: PNG
  Resolution: 629x629
  Size: 210.4KB
  Downloads: 99
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  Realistic Vector Rocket HQ Image Free
  Format: PNG
  Resolution: 1018x685
  Size: 555.3KB
  Downloads: 99

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