comet

A century later, as a comet carrying disease and social unrest has upended the world, Afrofuturism may be more relevant than ever.

Meteor showers occur when flyby comets leave a dusty trail behind, so that when Earth runs through the trail, the dirt strikes our atmosphere, burns up and we see shooting stars.

The outer disk of planetesimals—basically, a huge pile of leftover comets—was almost completely cleared out.

When a comet’s ice vaporizes in sunlight, dust grains also fly off the comet.

Scientists have known for over 100 years that comets can spark meteor showers, but it wasn’t until 1983 that researchers had the technology needed to connect the Geminids to a small asteroid, dubbed Phaethon because it swings so close to the sun.

They found that there are roughly 1,900 hydrogen atoms for each deuterium atom in the water on Comet 67P.

The probe appears to be sitting at the bottom of a "cliff" on the comet, but beyond that it's hard to tell.

The basic approach went as planned: after separating from the Rosetta orbiter, Philae coasted slowly to the comet surface.

Landing on any other world is hard, but Comet 67P is especially challenging, even apart from the low gravity.

The comet is basically shaped like a rubber ducky, but with a much rougher surface.

The Comet started on her first trip up the Arkansas, being the first steam boat that ascended that river.

By the time he reached the bridge the cylinders were purring softly and the Comet was going like a limited express.

Here Matt's wisdom in bringing Clip along, even at the loss of some speed on the Comet's part, was made manifest.

Jem, the driver of the roadster, crashed through the bushes just as the Comet was getting under its own headway.

With all the reserve power thrown into the machinery, the Comet made hard work of the hill.