Question

2. Why do comets have tails?​

Answer 1

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• Comets develop tails as they approach perihelion—the place in their orbits when they are closest to the Sun. The Sun’s heat vaporizes some of the comet's material, releasing dust particles that were trapped in the ice.

Answer 2

Answer:

Comets comprise rock, metallic dust, and the frozen dust of volatile materials. ... But when it approaches the sun, the heat evaporates the comet's gases, causing it to emit dust and microparticles (electrons and ions). These materials form a tail whose flow is affected by the sun's radiation pressure.

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