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North America was first created in about 30,000 BC. Asian hunter gatherings had crossed over the frozen Bering Strait to become the first ever humans in America.
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South America was discovered / created in 10,000 BC. Americans from North America traveled onto land never explored and discovered South America.
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The first stars were produced a really long time ago, in about 130 BC. Early astronomers were the ones who realized this
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the big bang theory happened about 13 and 20 billion years ago. Billions of years ago there is a theory that the space expanded very fast. According to the space expanding it formed starts and galaxies.
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When Brahe pledged his life to astronomy he was struck by an eclipse, this occurred between the years 1546 and 1601. Brahe experienced seeing a bright new star forming.
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People first stared measuring the distance from the Earth to the Sun. There were theories that the sun was basically the "remote" for Earth. So, people made actual measurements to find out how far away we are from the sun according to all the other planets is the way they measured it.
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Newton first discovered how gravity works by creating his three laws. He discovered this in 1660 about dynamics and gravity.
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the direction in which a star is changed a little by its speed on Earth can change the opposite sense 6 months from now. The Earth will be on the opposite side of orbit.
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To find out how the the Earth weighs, you need to measure the value of universal constant. The Earth was weighed back then in 1776.
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To measure the distance of stars you need Earth's orbit and a distant star's distance was discovered back in 1810.
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Nuclear fusion is when an atomic nuclei fuses to form a heavier nucleus that releases energy.
