Phenomenon
Gap in Disc
A clearing in a protoplanetary disc carved by a planet.
Concentric gaps observed in protoplanetary discs (e.g., by ALMA), thought to be carved by forming planets.
Overview
Concentric gaps observed in protoplanetary discs (e.g., by ALMA), thought to be carved by forming planets.
See also
Planetary Ring
A disc of dust and ice circling a planet.
Impact Cratering
Craters carved by colliding bodies.
Solar Eclipse
When the Moon stands between Earth and Sun.
Lunar Eclipse
When Earth's shadow falls on the Moon.
Meteor Showers
Cosmic dust burning in our atmosphere.
Aurora (Northern/Southern Lights)
Solar wind painting the upper atmosphere.