The Size of Psyche

The Shape of Psyche (Credit ESO/LAM)

In 2022, NASA and Arizona State University will send a spacecraft to investigate the unique asteroid (16) Psyche, an assumed metal-rich body about the size of Switzerland orbiting in the asteroid belt at an average distance of 2.9 AU from the Sun. What is unique about asteroid Psyche is that it may, perhaps, be the …

Asteroid vs Comet

Asteroid 6478 Gault with tail

From active asteroids to dormant comets, rubbile piles to remnant cores, main belt comets and manx comets to ambiguous interstellar objects, this article provides a brief overview of the smaller objects in our planetary zoo and the main differences — and similarities — between asteroids and comets. But if it's meteors you're looking for, read …