Black holes cannot be seen without X-rays. If a telescope focuses on X-rays, we see a bright spot surrounding the black hole and a larger doughnut-shaped mass around that. The bright spot is gas, glowing at one million degrees. Any visible light it makes is absorbed by the doughnut-shaped mass of dust and gas around it. So we can only see it using X-rays. This is called a hidden or buried black hole.
What does the photograph show to support the paragraph?
A. a black hole seen in visible light without X-rays
B. a buried black hole that looks like a doughnut
C. million-degree gas inside a black hole
D. visible light and dust outside a black
Answers: 3
English, 22.06.2019 01:30
How do sotomayor's descriptions of her family most likelyaffect readers?
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The first step in making a mental model for a compare-and-contrast text is a. comparing the two things being described. b. finding important details in the text. c. contrasting the two things being described. d. connecting details to what is already known.
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With crack on crack of thunder, zeus let fly a bolt against the ship, a direct hit, so that she bucked, in reeking fumes of sulphur, and all the men were flung into the sea. they came up 'round the wreck, bobbing a while like petrels on the waves. no more seafaring homeward for these, no sweet day of return; the god had turned his face from them. –the odyssey, homer read the passage. then, identify the theme that is supported by the passage. most ships cannot survive a terrible thunderstorm. the ocean is an angry beast that will tame any who try to control it. the gods have the power to control human destiny. men are willing to die to eat the delicious cattle of the gods.
Answers: 1
Black holes cannot be seen without X-rays. If a telescope focuses on X-rays, we see a bright spot su...
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