Topic

When examined from the standpoint of orbital characteristics, comets appear to come in one of two broad categories: short-period and long-period. Short-period comets, as this term implies, have relatively short orbital periods and often have been observed at numerous returns, while long-period comets, obviously, have long orbital periods and usually have only been observed once. …

Last week’s topic concerned the asteroids that occupy the so-called “main asteroid belt” between the orbits of Mars and Jupiter. The overwhelming majority of the first several hundred asteroids discovered, and, indeed, a large majority of the asteroids known today, reside in this region. However, as years went by and more and more asteroids kept …

Ice and Stone 2020 is a weekly series of educational material focusing on some of the small bodies of the solar system – comets and asteroids. The Earthrise Institute, a non-profit founded by Comet Hale-Bopp co-discoverer Alan Hale, is partnering with the La Cumbres Observatory and RocketSTEM to release the material for FREE online so that …