10 Biggest Things in the Universe

Ten, the biggest asteroid ever discovered is Ceres (Seh-rees),which measures 600 miles or 965 kilometers in diameter It was actually the first asteroid to be discovered back in 1801 and some argue it’s big enough to be a dwarf planet

It contains a third of the entire asteroid belt’s mass and it’s diameter is about the same size as California’s length Nine, the biggest moon is Ganymede at 3,273 miles or 5,267 kilometers in diameter Discovered in 1610 by Galileo, Ganymede is one of Jupiter’s 63 moons and is larger than either Mercury or Pluto It’s covered in a thin layer of ice and may have layers of interior oceans, it is considered a possible home to alien life Number Eight

WASP-17b holds the record for biggest planet thanks to it’s huge diameter of 173,762 miles or 279,642 kilometers This exoplanet is 1,000 light years away from Earth and became the first known planet to have a retrograde orbit meaning it orbits its star in the opposite direction to the star’s rotation Twice the radius of Jupiter but with half the mass, it’s considered a puffy planet and has the density of a polystyrene cup At seven we have the biggest star, NML Cygni, that measures 14 billion miles or 2

3 billion kilometers across to put that in perspective, it’s 1,650 times our sun’s size If this red hyper giant were put at the center of our solar system it would consume Mercury, Venus, Earth, Mars & Jupiter Six is the biggest black hole, snappily named S5 0014+813, which is about 147 billion miles or 236 billion kilometers across With a mass 40 billion times that of our the sun, thankfully this ultra massive black hole is 12 billion light years away as every year it consumes a mass that equates to 4,000 of our suns Number five is Lyman-alpha blob 1, which holds the record for the biggest primordial cloud of hydrogen

This huge concentration of gas is 300,000 light years across or triple the size of the entire Milky Way Possibly involved in the formation of new galaxies, astronomers think the blob’s glow comes from existing galaxies embedded in its center, scattering light At four its the biggest galaxy, known as the IC1101 super galaxy, its a massive 6 million light years across Formed by the collision of other galaxies, it is 50 times larger than the Milky Way and 2,000 times as massive Located a billion light years away, it’s thought to consist of over a hundred trillion stars as well as dark matter

Number three The biggest void in the universe is the Canes Venatici Supervoid, at 13 billion light years in diameter Essentially, a huge hold in the universe, it contains only 17 galaxy clusters that don’t interact with each other It existence contradicts Einstein’s principle that the universe, at a large scale, should look the same wherever you are

Number two is the biggest quasar group, known as Huge-LQG Incredibly measuring 4 billion light years at it's widest point, this grouping of 73 quasars is a size previously thought to be theoretically impossible Even at the speed of light it would take 4 billion years to cross it the time it took for the formation of the Earth and human life to begin And finally, at number one, the biggest thing in the entire universe is the Hercules-Corona Borealis Great Wall, which is 10 billion light years in diameter The universe’s largest structure is a group of galaxies held together by gravity, it’s size and age are so big that scientists are reassessing how quickly the universe expanded after the Big Bang

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