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Bookmark or Share- The Universe | Facts, Information, History & Definition - The Nine PlanetsThe Big Bang theory states that the early universe was a hot place that expanded, and began to cool down. This means that the universe should be filled with radiation which is actually the relic/leftovers of the Big Bang event. And this was actually discovered! In fact, background radiation is everywhere.
- Why Are Galaxies Flat? | Space Questions - The Nine PlanetsThe theoretical Big Bang event is a concept that exists in physics which describes a possible version of our universe expanding from an initial state of high density and temperature. The work of mathematicians and astronomers has combined for decades in trying to prove or disprove this theory based on our observable universe.
- Distance Between Planets Of The Solar System | KM & Current DistanceThe distance between the eight planets in our Solar System changes depending on their positions in their orbits.
- How Old is the Universe? | How They Know, Age & History - The Nine PlanetsAstronomers calculate the age of the Universe by analyzing the distances and radial velocities of other galaxies. The cosmic microwave background is also factored into this, as it is a relic of the radiation leftover from the Big Bang. Everything is calculated based on rewinding events back to the Big Bang.
- Type Of Galaxies | Facts, Information, History & DefinitionThe oldest and farthest galaxy ever discovered is an irregular type of galaxy called GN-z11. It is 32 billion light-years / 9.8 billion parsecs away from us. It is estimated that the galaxy formed just around 400 million years after the Big Bang. Most galaxies are between 1.000 to 100.000 parsecs / 3.000 to 300.000 light-years in diameter.
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