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https://nineplanets.org › origin-of-the-solar-system
Here is a brief outline of the current theory of the events in the early history of the solar system A cloud of interstellar gas and or dust the solar nebula is disturbed and collapses under

https://nineplanets.org › the-universe
The 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

https://nineplanets.org › questions › where-did-the-big-bang-occur
A lot of questions surround the concept of the Big Bang one of which is where did the Big Bang occur This complex theory offers an insight into the possible origins of our universe which

https://nineplanets.org › questions
Big Bang Process Cosmic Inflation The theory suggests that at one point all the matter in the universe was held together in an area of infinite density and temperature This was prior to the

https://nineplanets.org › questions › why-are-galaxies-flat
The Big Bang Process It Starts with Cosmic Inflation The theory suggests that at one point all the matter in the universe was held together in an area of infinite density and temperature This

https://nineplanets.org › questions › galaxy-vs-universe-whats-the-difference
The Big Bang Process It Starts with Cosmic Inflation The theory suggests that at one point all the matter in the universe was held together in an area of infinite density and temperature

https://nineplanets.org › questions › cosmic-microwave-background-radiation
Image via NASA In 1965 two scientists Penzias and Wilson discovered that microwave radiation could be detected coming from the sky in any direction They were actually looking for something else so

https://nineplanets.org › questions › how-big-is-the-universe
This theory is named the Big Freeze Another popular scenario suggests that our Universe will stop expanding and will actually reverse this process When this happens the

https://nineplanets.org › kids › black-holes
Black holes are objects of both great mass density and are found throughout the Universe Keep reading for more facts for kids