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Quasars are recent additions to our body of knowledge about the physical universe. Quasars (quasi-stellar objects) are astronomical objects that are star like in appearance and emit non-thermal radiation, usually more ultraviolet and infrared radiation than stars. Quasars were first discovered in the early 1960s when telescopes picked up mysterious radio-wave emission sources that, at the time, could not be explained. Since then, thousands of radio-emitting and radio-quiet quasars have been located. One interesting feature of quasars is that their energy output can change by great amounts in a short period of time. To date, scientists have not been able to account for these energy changes. What belief does the information in the passage support? A. We often make significant discoveries by accident. B. We will someday know everything about our physical universe. C. Scientists are baffled by new discoveries in outer space. D. Scientists hold the key to all knowledge about outer space. E. We really know nothing about our physical universe.

Quasars are recent additions to our body of knowledge about the physical universe. Quasars (quasi-stellar objects) are astronomical objects that are star like in appearance and emit non-thermal radiation, usually more ultraviolet and infrared radiation than stars. Quasars were first discovered in the early 1960s when telescopes picked up mysterious radio-wave emission sources that, at the time, could not be explained. Since then, thousands of radio-emitting and radio-quiet quasars have been located. One interesting feature of quasars is that their energy output can change by great amounts in a short period of time. To date, scientists have not been able to account for these energy changes. What belief does the information in the passage support? A. We often make significant discoveries by accident. B. We will someday know everything about our physical universe. C. Scientists are baffled by new discoveries in outer space. D. Scientists hold the key to all knowledge about outer space. E. We really know nothing about our physical universe.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Quasars are recent additions to our body of knowledge about the physical universe. Quasars (quasi-stellar objects) are astronomical objects that are star like in appearance and emit non-thermal radiation, usually more ultraviolet and infrared radiation than stars. Quasars were first discovered in the early 1960s when telescopes picked up mysterious radio-wave emission sources that, at the time, could not be explained. Since then, thousands of radio-emitting and radio-quiet quasars have been located. One interesting feature of quasars is that their energy output can change by great amounts in a short period of time. To date, scientists have not been able to account for these energy changes. What belief does the information in the passage support? A. We often make significant discoveries by accident. B. We will someday know everything about our physical universe. C. Scientists are baffled by new discoveries in outer space. D. Scientists hold the key to all knowledge about outer space. E. We really know nothing about our physical universe.
Transcribed Image Text:Quasars are recent additions to our body of knowledge about the physical universe. Quasars (quasi-stellar objects) are astronomical objects that are star like in appearance and emit non-thermal radiation, usually more ultraviolet and infrared radiation than stars. Quasars were first discovered in the early 1960s when telescopes picked up mysterious radio-wave emission sources that, at the time, could not be explained. Since then, thousands of radio-emitting and radio-quiet quasars have been located. One interesting feature of quasars is that their energy output can change by great amounts in a short period of time. To date, scientists have not been able to account for these energy changes. What belief does the information in the passage support? A. We often make significant discoveries by accident. B. We will someday know everything about our physical universe. C. Scientists are baffled by new discoveries in outer space. D. Scientists hold the key to all knowledge about outer space. E. We really know nothing about our physical universe.
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