Read the text The Milky Way: The band that looks like milk in the night sky isn't actually milk, of course–it's a galaxy. A galaxy is a huge cluster of stars, dust, gas, and other objects bound together in space. Our Solar System, which includes the sun, Earth, and other planets, is part of the Milky Way galaxy. The Milky Way is about 14 billion years old. Almost 10 billion years older than our Solar System!

It took many years to discover the Milky Way. In the early 1500s, Nicolaus Copernicus was the first to show that Earth was an object orbiting the Sun. In the early 1600s, Galileo Galilei used a basic telescope to show that the Milky Way was made up of countless stars. Then, in the late 1700s, William Herschel tried to map out the shape of the Milky Way. He did not realize that large portions of the galaxy were hidden by gas and dust, so he could not identify the true shape. Edwin Hubble had access to many powerful telescopes and tools to observe more objects in space. His work provided evidence that the Milky Way was only one of many galaxies in the universe. He also identified the spiral shape of our galaxy.

Why was Herschel unable to correctly map out the shape of the Milky Way?

21) this excerpt involves david, who travels with an inventor named perry. they test their experimental invention, a vehicle that burrows into the earth's crust. which statement best reflects the human experience that is represented in this excerpt? a) humans are not always reliable guides. b) humans desire wealth and a life of ease. c) humans are drawn to explore and experiment. d) humans attempt to conquer and control nature. 22) which statement best reflects the human experience that is represented in this excerpt? a) humans desire to control nature. b) humans are frightened by nature. c) humans are fascinated by nature. d) humans cannot understand nature. 23) 8 “what do you mean perry? ” i cried. “do you think that we are dead, and this is heaven? ” suppose the author changed section eight as listed below. 8 “perry, i have to object! ” i cried. “you don't think that we are dead, and this is heaven, do you? ” which correctly identifies the author's meaning for the word object? consider the effect of the stressed or unstressed syllable in the word object. a) you would stress the second syllable because the word is a noun and means a goal or purpose. b) you would stress the second syllable because the word is a verb and means to express or feel disapproval. c) you would stress the first and second syllable because the word is a verb and means to modify an adjective. d) you would stress the first syllable because the word is a noun and means a thing that has a finite, physical form. 24) 2 together we stepped out to stand in silent contemplation of a landscape at once weird and beautiful. before us a low and level shore stretched down to a silent sea. as far as the eye could reach the surface of the water was dotted with countless tiny isles—some of towering, barren, granitic rock—others resplendent in gorgeous trappings of tropical vegetation, myriad starred with the magnificent splendor of vivid blooms. 3 behind us rose a dark and forbidding wood of giant arborescent ferns intermingled with the commoner types of a primeval tropical forest. huge creepers depended in great loops from tree to tree, dense under-brush overgrew a tangled mass of fallen trunks and branches. upon the outer verge we could see the same splendid coloring of countless blossoms that glorified the islands, but within the dense shadows all seemed dark and gloomy as the grave. which most completely analyzes this excerpt for a comment about life? a) beauty is kind and inviting. b) nature is evil and forbidding. c) there is no risk in following beauty. d) what appears beautiful can also be deadly.