comet

The ocean behind them explodes as if a comet has dropped from the skies.

Any show of effort by the twins was as rare as a great comet, and she intended to take advantage.

The team concluded that the object responsible was a meteorite rather than a comet.

Cosmic dust forms when stars explode or when comets break apart, and much of it carries a rare version of helium called helium-3 after passing near the sun.

But whenever the blazing comet that is Ms. Chenoweth is not center stage—which isn’t often, but often enough—“The Queen of Versailles” loses altitude.