| Thanks to pick-up ion measurements, Ulysses can make observations of comet tails at large distances from the Sun. |
| This stream of lost material is what gives rise to the characteristic comet tail. |
| Compared with other genotoxicity tests, the comet assay is a cheap and simple method. |
| It can draw multiple light curves in several returns of a periodic comet in one graph. |
| The comet is now revolving around the Sun every 6.6 years on an elliptical orbit with a low inclination compared to that of the Earth. |
| The rock was a meteorite, blasted off the Red Planet long ago by the impact of a comet. |
