Related Experiment Video
Updated: Mar 1, 2026

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Comets: looking ahead
1Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA ma@astro.umd.edu.
Abstract:
We outline the key questions about comets that must be answered in order to understand cometary formation in the context of the protoplanetary disc and the role of comets in the formation and evolution of the solar system. We then discuss the new understanding of comets from Rosetta and from other recent advances, including work presented by others at the discussion meeting. Finally, we suggest some key directions for future projects to better address the above questions.This article is part of the themed issue 'Cometary science after Rosetta'.
Related Concept Videos
Momentum And Radiation Pressure
Compass
Upward Impending Motion
To better comprehend how a screw jack functions, consider the completely unraveled thread as a block in contact with the...
Kepler's First Law of Planetary Motion
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
Rocket Propulsion in Empty Space - I
Atomic Emission Spectroscopy: Overview

