The Murchison meteorite, as it is now known, is a fragment of a "planetesimal" or small, solid fragment that condensed out of the solar nebula as the solar system formed.    From Wordnik.com.  [In the Primordial Soup] Reference

A handful of components, scraping iron ore from a planetesimal.    From Wordnik.com.  [Jason Stoddard, Strange and Happy » 2009 » August] Reference

The inner satellite of Mars and the rings of Saturn make no special difficulty under the planetesimal hypothesis.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

Tendrils of it forced themselves into the loose material of the planetesimal, mining it for carbonaceous molecules.    From Wordnik.com.  [Spin] Reference

THE most elaborate structure yet proposed to explain the origin of the solar system is the planetesimal hypothesis by.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

To this extent the planetesimal hypothesis does not furnish a good explanation of the origin of comets, unless we assume that.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

If the angle were 30 degrees or 50 degrees or 80 degrees, instead of 7 degrees, the case for the planetesimal hypothesis would be somewhat stronger.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

Chamberlin disputed Kelvin's assumption of simple cooling from a molten origin because he was already formulating his own cold, planetesimal origin.    From Wordnik.com.  [Chamberlin, Thomas Chrowder] Reference

The point is not necessarily in opposition to the planetesimal hypothesis; but whatever the explanation, it ought to apply to the planet as well as to the Sun.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

"We believe Phoebe is a good example of the fundamental building blocks of planets -- an icy planetesimal," he said, noting that such objects once filled the solar system.    From Wordnik.com.  [Saturn Moon Reveals Its Secrets] Reference

An astronaut who had made the impossibly long journey and knew precisely where to look would have seen it as a black dimple on the rocky/icy regolith of the host planetesimal.    From Wordnik.com.  [Spin] Reference

The authors call attention to the fact that the Sun's equator is inclined at a small angle, 7 degrees, to the common planes of the planetary system, and Chamberlin holds this to be one of the strong points in favor of the planetesimal hypothesis.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

With all those Masonic symbols on its cover, I figured that CULTS, CONSPIRACIES AND SECRET SOCIETIES stood a small chance of being captured by THE LOST SYMBOL's commercial gravity, much as a tiny planetesimal can get pulled into a gas giant's orbit.    From Wordnik.com.  [Boing Boing] Reference

The planetesimal hypothesis attributes this equatorial acceleration to the falling back into the Sun of the materials which had been lifted out to a short distance by the disturbing body, and to the forward-rushing tide raised in the equatorial regions by the disturbing body.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

Thomas Chrowder Chamberlin (1843-1928) was a respected and influential American geologist and science educator who supported the concepts of multiple glaciation and planetesimal origin of the Earth, and was among the first to emphasize carbon dioxide as a major regulator of Earth's temperature.    From Wordnik.com.  [Chamberlin, Thomas Chrowder] Reference

The planetesimal hypothesis explains well all west to east rotations of the planets on their axes, but to make Uranus rotate nearly at right angles to the plane of the system, and Neptune in a plane inclined 135 degrees to the plane of the system, is a difficulty in any of the hypotheses, unless special assumptions are made to fit each case.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

These TNOs represent the primitive remnants of the planetesimal disk from which the outer planets formed.    From Wordnik.com.  [Space Business and Industry News at SpaceMart.com] Reference

If the angle were 30o or 50o or 80o, instead of 7o, the case for the planetesimal hypothesis would be somewhat stronger.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

For a population of equal-mass bodies, gas drag and gravitational forcing cause the periastra of the planetesimal orbits to line up.    From Wordnik.com.  [systemic] Reference

A troubling footnote, to be sure, but the science was relatively new and unsettled. spiral Planet-planet scattering in planetesimal disks II.    From Wordnik.com.  [Gaea Times (by Simple Thoughts) Breaking News and incisive views 24/7] Reference

This theory postulates that a planetesimal struck the Earth causing debris was launched into the Earth's orbit and over time formed the moon.    From Wordnik.com.  [CreationWiki - Recent changes [en]]

THE most elaborate structure yet proposed to explain the origin of the solar system is the planetesimal hypothesis by Chamberlin and Moulton.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

Hm, this inverts timescales for planetesimal formation - shorter timescales for growth and bigger characteristic lumps at larger distances (Chambers 2010).    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

Other hypotheses, having the same end in view, are the meteoritic hypothesis of Lockyer and the planetesimal hypothesis that has been largely developed in the United States.    From Wordnik.com.  [History of Astronomy] Reference

The moon is thought to be the result of a collision between the early Earth and a Mars-sized planetesimal (sometimes called Theia), blasting enough material into orbit around the Earth to form the moon from accretion.    From Wordnik.com.  [Yahoo! Answers: Latest Questions] Reference

Hence the fundamental importance of the early atmosphere, heavy with planetesimal dust, in blanketing the earth against intensities of radiance from without, as Chamberlin says, and inequalities of radiance from within.    From Wordnik.com.  [The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told] Reference

The authors call attention to the fact that the Sun's equator is inclined at a small angle, 7o, to the common planes of the planetary system, and Chamberlin holds this to be one of the strong points in favor of the planetesimal hypothesis.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

The fact that the disturbing body drew 225 times as much matter a great distance to form the four large planets as it drew out a short distance to form the four small planets and the asteroids seems difficult of explanation on the planetesimal hypothesis.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

Chambers: planetesimal growth and terrestrial planets brings up the role of turbulent eddies and stagnant pools in clumping the dust does it give right size scales and time scales for the formation of early protoplanetary aggregates and espc. the chondrules?.    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

To this extent the planetesimal hypothesis does not furnish a good explanation of the origin of comets, unless we assume that a small amount of matter was widely scattered in all directions around the parent spiral; and this conception leads to some apparent difficulties.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

The planetesimal hypothesis explains well all west to east rotations of the planets on their axes, but to make Uranus rotate nearly at right angles to the plane of the system, and Neptune in a plane inclined 135o to the plane of the system, is a difficulty in any of the hypotheses, unless special assumptions are made to fit each case.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

A short distance to form the four small planets and the asteroids seems difficult of explanation on the planetesimal hypothesis.    From Wordnik.com.  [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference

Considering the four large planets as one group and the four small planets as another group, we find that the inclinations of the orbits of the two groups, per unit mass, are about equal; but the average eccentricity of the orbits of the large planets, per unit mass, is 21 times that of the orbits of the small planets. 1 The evidence, except as to the asteroids and Mercury, is not favorable to the planetesimal hypothesis, unless we make special assumptions as to the distribution of materials in the spiral nebulæ.    From Wordnik.com.  [The Scientific Monthly, October-December 1915] Reference

But it may be that short-lived planetesimal dynamos were widespread in the early solar system. ".    From Wordnik.com.  [YubaNet.com] Reference

On a large asteroid/planetesimal, a commited-to-duty security officer has to escort a totally-geeky-introverted-whiny-dedicated-to-his-science geologist.    From Wordnik.com.  [Good Writers Doing Good, But Not Exceptional, Things] Reference