Results 11 to 20 of about 18,053,565 (370)
The Impact of Light Pollution on Islamic New Moon (hilal) Observation
International Journal of Sustainable Lighting, 2017 Muslims has differentiated between new moon and Islamic new moon (hilal). The determination of first day of months based on visibility of Islamic new moon (hilal) i.e. sightings of the first sliver of the waxing moon marking the start of each month.
Nur Nafhatun Md Shariff +2 more
doaj +2 more sources
Monthly Notices of the Royal Astronomical Society, 2003 The first appearance of the new Moon has been used throughout history and is still used today to determine religious calendars. Many methods for predicting the Moon’s appearance have been proposed throughout history and new models are still being developed. All these models have to be tested against observations to test their validity.
R. Hoffman
openaire +3 more sources
How to determine an exomoon's sense of orbital motion [PDF]
, 2014 We present two methods to determine an exomoon's sense of orbital motion (SOM), one with respect to the planet's circumstellar orbit and one with respect to the planetary rotation. Our simulations show that the required measurements will be possible with the European Extremely Large Telescope (E-ELT).
Albrecht, Simon, Heller, René
arxiv +4 more sources
The Origin of the Moon Within a Terrestrial Synestia [PDF]
, 2018 The giant impact hypothesis remains the leading theory for lunar origin. However, current models struggle to explain the Moon's composition and isotopic similarity with Earth. Here we present a new lunar origin model.
S. Lock +6 more
semanticscholar +6 more sources
A New Method for Ground-Based Optical Polarization Observation of the Moon [PDF]
SensorsAs a natural satellite of the Earth, the moon is a prime target for planetary remote sensing exploration. However, lunar polarization studies are not popular in the planetary science community.
Weinan Wang +6 more
doaj +2 more sources
New Jupiter and Saturn Satellites Reveal New Moon Dynamical Families
Research Notes of the AAS, 2023 Tens of new moons around both Jupiter and Saturn have been announced on Minor Planet Electronic Circulars (MPECs) in late 2022 and early 2023. Jupiter now has 95 and Saturn 146 confirmed moons.
S. Sheppard +3 more
semanticscholar +1 more source
Modified Model for the Moon Sighting and Phases
Yanbu Journal of Engineering and Science, 2023 The modified moon sighting model is developed from the basic moon sighting model by adopting more phases. The preference of the new model is proved by its ability to predict extra three moon phases, first quarter, last quarter and dark moon. The modified
Gamal Hafez
doaj +2 more sources