Halley's Wind: Reappraising a Centuries Old Theory for the Trade Winds [PDF]
arXiv, 2018 The astronomical work of Edmond Halley (1656-1742) during the latter half of the Copernican Revolution contributed substantially to the scientific proof and widespread acceptance of heliocentrism. Perhaps the most well-known example is his prediction of the return of the comet named in his honor.
arxiv
Behavioral Characteristics and CO+CO2 Production Rates of Halley-Type Comets Observed by NEOWISE [PDF]
, 2018 From the entire dataset of comets observed by NEOWISE, we have analyzed 11 different Halley-Type Comets (HTCs) for dust production rates, CO+CO2 production rates, and nucleus sizes. Incorporating HTCs from previous studies and multiple comet visits we have a total of 21 stacked visits, 13 of which are active and 8 for which we calculated upper limits ...
arxiv +1 more source
Effects of the Sun's time-retarded gravitational field on the orbital motions of Mercury and Halley's Comet [PDF]
arXiv, 2011 The neoclassical causal version for Newton's acausal gravitational theory explains exactly the anomalous speed-changes observed for six Earth flybys and an anomalous lunar orbital speed-change (arXiv:1105.3857v10). This article estimates the effects of the neoclassical causal theory on the orbital motions of two objects revolving around the Sun ...
arxiv
Comet dust as a mixture of aggregates and solid particles: model consistent with ground-based and space-mission results [PDF]
, 2009 The most successful model of comet dust presents comet particles as aggregates of submicron grains. It qualitatively explains the spectral and angular change in the comet brightness and polarization and is consistent with the thermal infrared data and composition of the comet dust obtained {\it in situ} for comet 1P/Halley. However, it experiences some
arxiv +1 more source
Seeing Halley's Comet: A guide for observers in the Northern Hemisphere [PDF]
A guide for the observation of Halley's comet is presented. The path of the comet is described for the fly by dates and charts are provided for location of the comet in the morning or evening skies.
core +1 more source
Mission strategy for cometary exploration in the 1980's [PDF]
A sequence of ballistic intercept missions to comets is proposed. The mission set is composed of a well-known group of periodic comets whose physical properties are dissimilar. In addition to full descriptions of the nominal mission profiles, earth-based
Farquhar, R. W.
core +4 more sources
Comet Halley and history [PDF]
A history of Halley's Comet is presented.
Marsden, B. G.
core +1 more source
Isotopic abundances of carbon and nitrogen in Jupiter-family and Oort Cloud comets [PDF]
, 2005 The 12C14N/12C15N and 12C14N/13C14N isotopic ratios are determined for the first time in a Jupiter-family comet, 88P/1981 Q1 Howell, and in the chemically peculiar Oort Cloud comet C/1999 S4 (LINEAR). By comparing these measurements to previous ones derived for six other Oort Cloud comets (including one of Halley-type), we find that both the carbon and
arxiv +1 more source
Solar array conceptual design for the Halley's Comet ion drive mission, phase 2 [PDF]
Conceptual design studies were performed directed toward a high power, ultralightweight solar array, compatible with the requirements for the Halley's Comet Ion Drive Mission.
Rayl, G. J. +2 more
core +1 more source
Halley's comet 1985-86: space exploration [PDF]
A coordinated program to explore Halley's comet in 1985 to 86 is proposed. The program employs a variety of observational systems for remote observations and utilizes spacecraft encounters with the comet to obtain in-situ measurements.
Farquhar, R. W., Wooden, W. H., II
core +1 more source