In this work, we characterize the recently discovered active main belt object P/2012 F5
(Gibbs), which was discovered with a dust trail> 7'in length in the outer main belt, 7 months
prior to aphelion. We use optical imaging obtained on UT 2012 March 27 to analyze the …

The onset of Earth's present icehouse climate in the Late Eocene coincides with
astronomical events of enigmatic causation. At∼ 36 Ma ago the 90–100 km large Popigai
and Chesapeake Bay impact structures formed within∼ 10–20 ka. Enrichments of 3 He in …

… by the oceans, asteroid impacts are likely hit water, sending water and water vapor into the
atmosphere, and possibly causing destructive tsunamis. Scientists at Los Alamos National
Laboratory (LANL), led by Dr. Galen Gisler, are studying the effects of asteroids impacting deep …

Abstract O'Brien and Greenberg [O'Brien, DP, Greenberg, R., 2005. Icarus 178, 179–212]
developed a self-consistent numerical model of the collisional and dynamical evolution of
the main-belt and NEA populations that was tested against a diverse range of observational …

… disruption. Most models of asteroid collisions take into account the distribution of
masses of other impacting asteroids, since impactor size is important to understanding
the significance of various collision events. However, those …

A calibrated lightcurve is presented of the near‐Earth asteroid 2008 TC3, obtained before it
impacted Earth on October 7, 2008. The asteroid was observed in unfiltered images from the
end of astronomical twilight until the object entered Earth's shadow about 2 h later. The …

… the ocean floor (10) and this minimum estimate is consistent with the absence of a substantial
crustal component in the impact melt (2). The estimated maximum size of the asteroid is not … 4
Because asteroids with diameters .1 km have a probability of impacting Earth every …

We have performed a simulation of a next generation sky survey's (Pan-STARRS 1)
efficiency for detecting Earth-impacting asteroids. The steady-state sky-plane distribution of
the impactors long before impact is concentrated towards small solar elongations (Chesley …

… The initially chaotic binary can be stabilized to create a synchronous binary by components of
the fissioned secondary asteroid impacting the primary asteroid, solar gravitational perturbations,
and … Rotationally fissioned asteroids evolve into observed small asteroid classes …

Various meteor and fireball networks exist worldwide. Most data sets which include ground-
based observational data of meteors are affected by biases. The larger and faster the
entering meteoroid, the brighter is the produced meteor. Hence, small and slow objects often …