Lunar Meteoritic Impact Search Mission Statement

(Revised: 04 September 2000)


Mission Statement: A Vision of Lunar Impact Research

Since the first confirmed lunar impact observation of 18 November 1999, an exciting area in observational astronomy has re-opened. Attempts were made to observe meteor hits on the Moon in the 1940's, '50's, and 60's, but none of the many impact candidates observed during this time have been independently confirmed.  Watching lunar meteors involves observing the visual signatures (i.e. flashes) of things hitting the Moon, phenomena that may be a bit more common than once thought. It takes only a small telescope or even binoculars to reveal evidence of copious amounts of impact events that have happened in the past. However, it is not until this present age that such an event has been witnessed and confirmed as such. Several instances have occurred in the past where single observers have witnessed what were likely meteoritic impacts on the moon. The famous case of the 12th century monks is one example, with the possible evidence in the form of the crater Bruno; more recent examples include Dr. Leon Stuart's Lunar Flare of 1953 and several reports of lunar transient phenomena in the form of flashes, lights and other events. What a fitting time, at a point where the vast majority of the population considers the changing of the millennia, that a pioneering new field in observational astronomy is birthed.

The purpose of ALPO's Lunar Meteoritic Impact Search is to coordinate the observation of lunar impact events. The vision is to develop the program and resources to make serious professional research of these "lunar flashes" a reality in the near future. For the time being, we will use the resources given and coordinate the observations of willing participants to develop a catalogue of lunar impact events. Several questions to answer in the immediate future include: Just how common are these "impact flashes" that have been observed on the Moon as of late? Is it possible to observe these impacts during the occurrence of every major meteor shower when the Moon is favorably placed? What can these flashes tell us about the impactors themselves? What sorts of models (these are for the theorists in our audience, of which I am not) of size, composition, kinetic energy to light efficiency, etc. best match the observed flashes? How can systematic observations of lunar meteors best complement ground-based observations of meteors burning up in the Earth's atmosphere? What can both sets of observations (previous questions) tell us about the meteor stream itself? (This is more long-term, but) Is it feasible to position a lunar-orbiting satellite to constantly monitor for and observe lunar flashes (during meteor showers and at other times) in various bandpasses (perhaps taking spectra) on the dark side of the Moon?

These questions are simply the beginning and one can appreciate what sorts of possibilities this opens up. We stand on the shoulders of at least one giant, the late Gene Shoemaker whom I worked with in my undergraduate college days. Dr. Shoemaker revealed that the craters we see on the Moon are actually from impacts rather than volcanoes.  We are picking up one of the torches he dropped in his untimely passing by venturing into this field of lunar flash studies.
 


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