Definition of Planetesimal. Meaning of Planetesimal. Synonyms of Planetesimal

- Planetesimals (/ˌplænɪˈtɛsɪməlz/) are solid objects thought to exist in protoplanetary disks and debris disks. Believed to have formed in the Solar System...
- possible. The grains eventually may coagulate into kilometer-sized planetesimals. If the disk is m****ive enough, the runaway accretions begin, resulting...
- 2019. Arrokoth is a contact binary 36 km (22 mi) long, composed of two planetesimals 21 and 15 km (13 and 9 mi) across, that are joined along their major...
- these planetesimal encounters shift (migrate) the orbits of the planets by significant amounts. This process continues until the planetesimals interact...
- The Chamberlin–Moulton planetesimal hypothesis was proposed in 1905 by geologist Thomas Chrowder Chamberlin and astronomer Forest Ray Moulton to describe...
- or other body in orbit around a star interacts with a disk of gas or planetesimals, resulting in the alteration of its orbital parameters, especially its...
- kilometer-sized planetesimals that gravitationally perturb each other's orbits and collide, gradually coalescing into the dominant planets. A planetesimal is an...
- pancake or ring-shaped accretion disk of matter composed of gas, dust, planetesimals, asteroids, or collision fragments in orbit around a star. Around the...
- particles, ranging from centimeters up to meters in diameter, into planetesimals in a protoplanetary disk that is enhanced by aerodynamic drag from the...
- probably not the source of the Late Heavy Bombardment. According to one planetesimal simulation of the establishment of the planetary system, the outermost...