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The surfaces of rotating stars serve as a window into their interiors, magnetic dynamos, and are important in other areas including exoplanet discovery and atmospheric characterization. While indirect techniques such as photometry and…

天体物理仪器与方法 · 物理学 2025-10-01 Shashank Dholakia , Benjamin J. S. Pope

Over the course of 3.1 years we determined the position of Mars on 75 dates using a handheld cross staff and two to five bright reference stars of known right ascension and declination on each occasion. On average the observed positions of…

地球与行星天体物理 · 物理学 2019-01-01 Kevin Krisciunas

Kinematics in Finsler space is investigated. It is showed that the result based on the kinematics with a special Finsler structure is in good agreement with the reported value of secular trend in the astronomical unit, $d{\rm…

广义相对论与量子宇宙学 · 物理学 2015-05-14 X. Li , Z. Chang

This paper introduces a closed-form analytical solution for the inverse kinematics (IK) of a 6 Degrees of Freedom (DOF) serial robotic manipulator arm, configured with six revolute joints and utilized within the Lunar Exploration Rover…

机器人学 · 计算机科学 2024-10-31 Serdar Kalaycioglu , Anton de Ruiter , Ethan Fung , Harrison Zhang , Haipeng Xie

The applicability of the linear theory of elasticity to the Moon has been studied. As a criterion was taken the smallness of the strain tensor. The elastic moduli are obtained from the data of the project "Apollo". The pressure was…

地球物理 · 物理学 2017-06-29 Vladimir Pavlov

Inter satellite laser interferometry is a central component of future space-borne gravity instruments like LISA, eLISA, NGO and future geodesy missions. The inherently small laser wavelength allows to measure distance variations with…

The Moon is a unique platform for fundamental astrophysical measurements of gravitation, the Sun, and the Universe. Lacking a permanent ionosphere and, on the farside, shielded from terrestrial radio emissions, a radio telescope on the Moon…

天体物理仪器与方法 · 物理学 2009-09-15 Jack O. Burns , the LUNAR Consortium

In 1970, the Soviet Lunokhod 1 rover delivered a French-built laser reflector to the Moon. Although a few range measurements were made within three months of its landing, these measurements---and any that may have followed---are unpublished…

Three principal concepts regarding lunar formation have been examined: the accretion hypothesis, the mega-impact theory, and the multi-impact model. The multi-impact model amalgamates the salient facets of the mega-impact theory and the…

地球与行星天体物理 · 物理学 2023-10-27 Nick Gorkavyi

The Los Alamos National Laboratory designed and built Mars Odyssey Neutron Spectrometer (MONS) has been in excellent health operating from February 2002 to the present. MONS measures the neutron leakage albedo from galactic cosmic ray…

天体物理仪器与方法 · 物理学 2019-08-16 K. E. Mesick , W. C. Feldman , E. R. Mullin , L. C. Stonehill

Lunar laser ranging provides a number of leading experimental tests of gravitation -- important in our quest to unify General Relativity and the Standard Model of physics. The Apache Point Observatory Lunar Laser-ranging Operation (APOLLO)…

The Apache Point Lunar Laser-ranging Operation (APOLLO) has been collecting lunar range measurements for 15 years at millimeter accuracy. The median nightly range uncertainty since 2006 is 1.7 mm. A recently added Absolute Calibration…

天体物理仪器与方法 · 物理学 2023-04-25 Nicholas R. Colmenares , James B. R. Battat , Daniel P. Gonzales , Thomas W. Murphy , Sanchit Sabhlok

We present simulations for interferometer arrays in Earth orbit and on the lunar surface to guide the design and optimization of space-based Ultra-Long Wavelength missions, such as those of China's Chang'E program. We choose parameters and…

天体物理仪器与方法 · 物理学 2015-06-22 Mo Zhang , Maohai Huang , Yihua Yan

The lunar geological record contains a rich archive of the history of the inner Solar System, including information relevant to understanding the origin and evolution of the Earth-Moon system, the geological evolution of rocky planets, and…

地球与行星天体物理 · 物理学 2014-08-13 Ian A. Crawford , Katherine H. Joy

The lunar geological record has much to tell us about the earliest history of the Solar System, the origin and evolution of the Earth-Moon system, the geological evolution of rocky planets, and the near-Earth cosmic environment throughout…

地球与行星天体物理 · 物理学 2015-06-05 I. A. Crawford , M. Anand , C. S. Cockell , H. Falcke , D. A. Green , R. Jaumann , M. A. Wieczorek

In 1859, Le Verrier discovered the Mercury perihelion advance anomaly. This anomaly turned out to be the first relativistic-gravity effect observed. During the 157 years to 2016, the precisions and accuracies of laboratory and space…

广义相对论与量子宇宙学 · 物理学 2016-12-28 Wei-Tou Ni

In the companion paper ("Erosion rate of lunar soil under a landing rocket, part 1: identifying the rate-limiting physics", this issue) an equation was developed for the rate that lunar soil erodes under the exhaust of a landing rocket.…

地球与行星天体物理 · 物理学 2024-03-28 Philip Metzger

The sunlight reflected from the Moon during a total lunar eclipse has been transmitted through the Earth's atmosphere on the way to the Moon. The combination of multiple scattering and inhomogeneous atmospheric characteristics during that…

地球与行星天体物理 · 物理学 2022-10-10 Iain A Steele , Klaas Wiersema , Callum McCall , Andrew Newsam , Manisha Shrestha

The ultra-long wavelength sky ($\nu\lesssim 30$ MHz) is still largely unexplored, as the electromagnetic wave is heavily absorbed and distorted by the ionosphere on Earth. The far-side of the Moon, either in lunar-orbit or on lunar-surface,…

星系天体物理 · 物理学 2025-11-04 Qige Ao , Furen Deng , Yidong Xu , Bin Yue , Huanyuan Shan , Xuelei Chen