Yes.
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No, 15 kilometers is smaller than 9 miles. 9 miles is approximately equal to 14.48 kilometers.
About 11.8 miles 1 kilometer is 0.621371192 miles
14.5 kilometers is approximately 9 miles.
Halley's Comet has a nucleus (solid center) estimated to be about 9 miles (15 kilometers) wide. The most recently verified sighting of Halley's Comet was in 1986.
Halley's Comet has an average diameter of about 11 kilometers (6.8 miles).
Halley's Comet varies in size as it travels through space. Its nucleus is estimated to be about 9 miles (15 kilometers) long and 5 miles (8 kilometers) wide. When the comet is close to the sun, it can develop a coma (a cloud of gas and dust) and a tail that can extend for millions of miles.