author={Edward Belbruno and J. Richard Gott},
  journal={The Astronomical Journal},
The current standard theory of the origin of the Moon is that Earth was hit by a giant impactor the size of Mars, causing ejection of iron-poor impactor mantle debris that coalesced to form the Moon. But where did this Mars-sized impactor come from? Isotopic evidence suggests that it came from 1 AU radius in the solar nebula, and computer simulations are consistent with its approaching Earth on a zero-energy parabolic trajectory. But how could such a large object form in the disk of… Expand
Forming a Moon with an Earth-like Composition via a Giant Impact
Computer simulations show that a giant impact on early Earth could lead to a Moon with a composition similar to Earth’s, and simulate impacts involving larger impactors than previously considered that can produce a disk with the same composition as the planet's mantle, consistent with Earth-Moon compositional similarities. Expand
Dynamical sequestration of the Moon-forming impactor in co-orbital resonance with Earth
Abstract Recent concerns about the giant impact hypothesis for the origin of the Moon, and an associated “isotope crisis” may be assuaged if the impactor was a local object that formed near Earth. WeExpand
Life on Earth Came From Other Planets by Rhawn Joseph
  • 2010
A comprehensive theory based on a review of scienti fic findings published in prestigious scientific journals, is presented to ex plain how life on Earth came from other planets. Life appeared a fewExpand
Workshop : Issues with the Precambrian time scale , September 25 , Fremantle , Western Australia The Hadean Eon on the Moon
The Moon, Earth and other terrestrial planets originated through "impact accretion" of material in the inner portion of the solar nebula within a few tens of millions of years of the 4.567 b.y. birthExpand
Not So Rare Earth? New Developments in Understanding the Origin of the Earth and Moon
Abstract A widely accepted model for the origin of the Earth and Moon has been a somewhat specific giant impact scenario involving an impactor to proto-Earth mass ratio of 3:7, occurring 50–60 MaExpand
Chemical and isotopic consequences of lunar formation via giant impact
There is near consensus in the planetary science community that the origin of the Moon can be traced to a massive interplanetary collision between a roughly Mars-sized object and the growing EarthExpand
Lunar-forming impacts: processes and alternatives
  • R. Canup
  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2014
The formation of a protolunar disc by a giant impact with the early Earth is discussed, focusing on two classes of impacts: canonical impacts and high-angular-momentum impacts, both of which require subsequent processes for consistency with the current Earth and Moon. Expand
Origin of the Moon
The Earth-Moon system is unusual in several respects. The Moon is roughly 1/4 the radius of the Earth - a larger satellite-to-planet size ratio than all known satellites other than Pluto's Charon.Expand
The effect of Lagrangian L4/L5 on satellite formation
In their article, “Where did the Moon come from?” which appeared the March 2005 issue of The Astronomical Journal, E. Belbruno and J. R. Gott of Princeton University proposed that a large planetoidExpand
Capture of interplanetary bodies in geocentric orbits and early lunar evolution
During the accretion of planets such as Earth, which are formed by collisional accretion of plan-etesimals, the probability of capture of interplanetary bodies in planetocentric orbits is calculatedExpand


Origin of the Moon in a giant impact near the end of the Earth's formation
This work reports a class of impacts that yield an iron-poor Moon, as well as the current masses and angular momentum of the Earth–Moon system, and suggests that the Moon formed near the very end of Earth's accumulation. Expand
From interstellar gas to the Earth‐Moon system
— This paper reports the current status of my smoothed particle hydrodynamic (SPH) simulations of the formation of the Moon. Since the Moon has recently been found to have been formed approximatelyExpand
Satellite-Sized Planetesimals and Lunar Origin
Abstract Exploratory calculations using accretionary theory are made to demonstrate plausible sizes of second-largest, third-largest, etc., bodies at the close of planet formation in heliocentricExpand
Origin of Terrestrial Planets and-the Earth-Moon System
our solar system was established more than 4 billion years ago through an era of planet formation lasting from 10 million to several hundred millions of years. Before we began learning about otherExpand
Origin of the Moon-The Collision Hypothesis
In 1871, during his presidential address to the British Association in Edinburgh, Sir William Thompson (later Lord Kelvin) discussed the impact of two Earth-like bodies, asserting that "when twoExpand
Simulations of a late lunar-forming impact
Abstract Results of about 100 hydrodynamic simulations of potential Moon-forming impacts are presented, focusing on the “late impact” scenario in which the lunar forming impact occurs near the veryExpand
The origin of the moon and the single-impact hypothesis III.
Abstract Previous papers in this series have described the smoothed particle hydrodynamics method (SPH) which we have employed to explore the conditions in which a major planetary collision may haveExpand
The formation of planetesimals.
Four stages in the accretion of planetesimals are described. The initial stage is the condensation of dust particles from the gaseous solar nebula as it cools. These dust particles settle into a thinExpand
Earth, Moon and Planets
THIS is one of a series of books from Harvard Observatory, all of which are compiled by specialists in their own particular sphere. The present volume gives up-to-date information about the bodies inExpand
Migration of Jupiter‐Family Comets and Resonant Asteroids to Near‐Earth Space
Abstract: The orbital evolution of about 26,000 Jupiter‐crossing objects and 1,500 resonant asteroids under the gravitationa influence of planets was investigated. The rate of their collisions withExpand