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The cloud of interstellar dust and gas that forms a star is known as a A. protostar. B. white dwarf. C. red giant. D. nebula. User: 15. With an average surface temperature of about 737 K, _______ is the hottest planet. A. Mars B. Mercury C. Earth D. Venus

Jeffrey Rodriguez

in Physics

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Donald Ward on June 3, 2018

Correct answer choice for question 1 is:D) the Nebula.Explanation:A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized vapors. Basically, the nebula was a sign for any distributed huge object, including behind the galaxies of the Milky way. The majority of the nebulae are of a large size, some numbers are light years in diameter. A nebula which is almost invisible to the human eye from the Earth seems bigger, but not flashing, from up close. The Orion Nebula, a bright nebula in the sky that controls a region of two times the diameter of the full Moon, can be observed with the naked eye, but was eliminated by scientific principles.Correct answer choice for question 2 is :D) VenusExplanation:Venus is the second planet from the Sun, rotating every 224.7 earth days. It has the greatest revolution of time of any planet in the Solar System and is converted in the other direction, for most of the other planets. You do not have satellites. It is the second brilliant natural object in the night sky after the Moon, causing an apparent magnitude of 4.6, bright enough to throw shadows in the night, and, exceptionally, obvious to the naked eye in the full light of day.


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