| A fortuitous recent result of asteroidal spectrography found that the object under observation was, in fact, a nearly dormant comet. |
| Had dinosaurs not been annihilated by an asteroidal impact, mammals might still be small, nocturnal insect-eaters unable to evolve higher intelligence. |
| Our understanding of astronomy has shown us that cometary and asteroidal impacts are relatively commonplace over timescales of hundreds of millions of years. |
| By planetary standards Ceres, named after the Roman goddess of agriculture, is tiny, but by asteroidal ones it is a whopper. |
| That famous geologist suggested that large asteroidal objects hit the Moon, forming its craters. |
| Of the somewhat larger objects i.e., mostly asteroidal in origin the great majority that reach the ground as meteorites are too small to endanger human life or property on a significant scale. |
