12. Taurus is named after the queen of Ethiopia. It is known for the "W" pattern of the stars.
13. Black Hole is a cloud of gas and dust where stars are formed.
14. Stars live as long as nuclear fusion occurs at its core and may exist for billions of years.
15. The universe is composed of dust and gas particles-majority of which are hydrogen and
helium atoms.
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Answer:
12.The constellation of Cassiopeia, the Queen, was one of the 48 constellations detailed by the Greek astronomer Ptolemy in the 2nd century AD. The constellation is most notable because of its W shape, which is said to represent the Queen sitting on her throne.
13.Star Formation
Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
14.Stars live different lengths of time, depending on how big they are. A star like our sun lives for about 10 billion years, while a star which weighs 20 times as much lives only 10 million years, about a thousandth as long.
15.Approximately 73% of the mass of the visible universe is in the form of hydrogen. Helium makes up about 25% of the mass, and everything else represents only 2%.
Explanation:
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