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Debiased Orbital and Absolute Magnitude Distribution of the Near-Earth Objects
The orbital and absolute magnitude distribution of the near-Earth objects (NEOs) is difficult to compute, partly because only a modest fraction of the entire NEO population has been discovered so…
The fossilized size distribution of the main asteroid belt
Linking the collisional history of the main asteroid belt to its dynamical excitation and depletion
Velocity Distributions among Colliding Asteroids
Abstract The probability distribution for impact velocities between two given asteroids is wide, non-Gaussian, and often contains spikes according to our new method of analysis in which each possible…
A sawtooth-like timeline for the first billion years of lunar bombardment
An Archaean heavy bombardment from a destabilized extension of the asteroid belt
It is reported that the Late Heavy Bombardment lasted much longer than previously thought, with most late impactors coming from the E belt, an extended and now largely extinct portion of the asteroid belt between 1.7 and 2.1 astronomical units from Earth.
COMETARY ORIGIN OF THE ZODIACAL CLOUD AND CARBONACEOUS MICROMETEORITES. IMPLICATIONS FOR HOT DEBRIS DISKS
- D. Nesvorný, P. Jenniskens, H. Levison, W. Bottke, D. Vokrouhlický, M. Gounelle
- Physics, Geology
- 23 September 2009
The zodiacal cloud is a thick circumsolar disk of small debris particles produced by asteroid collisions and comets. Their relative contribution and how particles of different sizes dynamically…
Global resurfacing of Mercury 4.0–4.1 billion years ago by heavy bombardment and volcanism
The findings suggest that persistent volcanism could have been aided by the surge of basin-scale impacts during this bombardment of Mercury, suggesting that resurfacing was global and was due to volcanism, as previously suggested.
Asteroids Were Born Big
The recent breakup of an asteroid in the main-belt region
The discovery of a family of asteroids that formed in a disruption event only 5.8 ± 0.2 million years ago, and which has subsequently undergone little dynamical and collisional evolution, is reported.