By 1891,only About 300 Asteroids Had Been Discovered

question 65

Multiple Choice

By 1891,only about 300 asteroids had been discovered.After 1891,hundreds more were discovered quickly.What caused this increased discovery rate for asteroids?

• A) the invention of the telescope
• B) the invention of photography
• C) the advent of astrophotography
• D) heightened interest in the solar system fueled by Percival Lowell and the Martian canals controversy

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