Though the study of astronomy predates recorded history, and physical space exploration has been possible since the 1950s, humans still remain largely in the dark about what's really out there.
For all that we've discovered, astronomers estimate that nearly 96% of the universe remains impossible to see or even comprehend.
But for all the mystery surrounding space, one thing we're sure of is its staggering beauty. Telescopes like NASA's Hubble illuminate the observable universe with captivating images of far-off planets, galaxies and star clusters.
Take in the beauty our universe has to offer through these 30 stunning images of space.
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