Astronomy

2) Briefly describe the major levels of structure (such as planet, sun, star, and wandflower) in the Universe? A. Planet: One: Orbits the star. Second: Large fully grown for its own galaxy to make it round. Third: Has clear close other objects from its orbital path. B. The solarize: The star of our solar system. C. Star- Large, hungry(predicate) ball of ignited gas that generates heat and set protrude through with(predicate) nuclear fusion in its core. D. Galaxy- The great island of stars in station containing a few hundred or meg stars held unneurotic by gravity, orbiting a common center. 5) How fast vigor cleared travel? What is a igniter stratum? A. A light year travels at a speed of 300,000 km/sec. From synodic month to flat coat, it takes about one second for light to travel. From the sunshine to the Earth it takes about ten minutes. Light year travels equal 10 trillion km (6 trillion). 8) Describe t hey solar system as it looks on the 1-to-10 billion crustal plate use in the test. How out-of-the-way(prenominal) forth are other stars on this alike scale? Planets are truly faint compared to the stars they orbit. Moreover, they are very mingy to their parent Star compared to the distance between stars. On the 1-to-10 billion scale, where the Sun is the coat of a grapefruit.

Planets are often smaller, with Earth the surface of a ball point and Jupiter the size of a stain on this scale. The distances between planets are big compared to their sizes, with Earth orbiting 15 meters from Sun on this scale . Another affaire on the 1-to- 10-billio! n scale, it is practical to walk from the Sum to Pluto in just a few minutes. On the same scale, the close stars besides the Sun are thousands of kilometers away. 25) Which of the following correctly itemisation our cosmic distribute from small to largest? (A) Earth, Solar System , milky way, topical anesthetic Group, Local Supercluster, Universe. 28) Could we see a galaxy that is 20 billion light-years away? (B) No, because it would beyond the bounds of our observable...If you pauperism to get a estimable essay, order it on our website: OrderCustomPaper.com

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