If you saw comet Halley when the comet was 0.9 AU from Earth and you observed a visible tail 5 degrees long, how long was the tail in kilometer? (Hint: use the small angle formula) (note: 1 AU = 1.5 x 10^9 km) ________ km
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If you saw comet Halley when the comet was 0.9 AU from Earth and you observed a visible tail 5 degrees long, how long was the tail in kilometer? (Hint: use the small angle formula) (note: 1 AU = 1.5 x 10^9 km)
________ km
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