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A time-dependent gravitational constant or mass would correctly describe the suspected increasing of both: the Astronomical unit and the eccentricity of the Lunar orbit around the Earth.

广义相对论与量子宇宙学 · 物理学 2014-02-19 Ll. Bel

We examined which exo-systems contain moons that may be detected in transit. We numerically modeled transit light curves of Earth-like and giant planets that cointain moons with 0.005--0.4 Earth-mass. The orbital parameters were randomly…

天体物理学 · 物理学 2009-11-11 Gy. M. Szabo , K. Szatmary , Zs. Diveki , A. Simon

The leading theory for the origin of the Moon is the giant impact hypothesis, in which the Moon was formed out of the debris left over from the collision of a Mars-sized body with the Earth. Soon after its formation, the orbit of the Moon…

科普物理 · 物理学 2015-03-11 Emil Noordeh , Patrick Hall , Matija Cuk

The early evolution of the Earth-Moon system prescribes the tidal environment of the Hadean Earth and holds the key to the formation mechanism of the Moon and its thermal evolution. Estimating its early state by backtracking from the…

地球与行星天体物理 · 物理学 2023-04-12 Jun Korenaga

Variations in the flux of Galactic Cosmic Rays (GCR) at Earth during the last 4.6 billion years are constructed from information about the Star Formation Rate (SFR) in the Milky Way and the evolution of solar activity. The variations of GCR…

空间物理 · 物理学 2007-05-23 Henrik Svensmark

Variance spectral analysis of superconducting gravimeter (SG) decadal data (noise inclusive) is presented suggesting that the Earth tectonogenesis is based on magnification of the mass (mainly the mantle) mechanical resonance, in addition…

地球物理 · 物理学 2011-09-29 M. Omerbashich

We have developed a model for the Earth rotation that gives a good account (data) of the Earth astronomical parameters. These data can be compared with the ones obtained using space-base telescopes. The expansion of the universe has an…

天体物理学 · 物理学 2011-04-01 Arbab I. Arbab

Our present-day atmosphere is often used as an analog for potentially habitable exoplanets, but Earth's atmosphere has changed dramatically throughout its 4.5 billion year history. For example, molecular oxygen is abundant in the atmosphere…

地球与行星天体物理 · 物理学 2018-12-05 Stephanie L. Olson , Edward W. Schwieterman , Christopher T. Reinhard , Timothy W. Lyons

It is straightforward to determine the size of the Earth and the distance to the Moon without making use of a telescope. The methods have been known since the 3rd century BC. However, few amateur or professional astronomers have worked this…

天体物理仪器与方法 · 物理学 2015-05-30 Kevin Krisciunas , Erika DeBenedictis , Jeremy Steeger , Agnes Bischoff-Kim , Gil Tabak , Kanika Pasricha

This paper shows how the exposure of the Moon to the Earth's plasmasheet is subject to decadal variations due to lunar precession. The latter is a key property of the Moon's apparent orbit around the Earth - the nodes of that orbit precess…

空间物理 · 物理学 2015-05-13 Mike Hapgood

The moon is receding from earth at an average rate of 3.8 cm/yr [6][7][9][12].This anomaly cannot be attributed to the well-known tidal exchange of angular momentum between earth and moon [8]. A secular change in the astronomical unit AU is…

综合物理 · 物理学 2010-01-09 M. Y. Amin

Forming the Moon by a high-angular momentum impact may explain the Earth-Moon isotopic similarities, however, the post-impact angular momentum needs to be reduced by a factor of 2 or more to the current value (1 L_EM) after the Moon forms.…

地球与行星天体物理 · 物理学 2020-08-10 Raluca Rufu , Robin M. Canup

The radiative and particulate loss of mass by the Sun, -9.13*10^-14 Solar masses per year or more causes the orbits of the planets to expand at the same rate, and their periods to lengthen at twice this rate. Unfortunately, under the…

天体物理学 · 物理学 2008-01-25 Peter D. Noerdlinger

The questions of how planets form and how common Earth-like planets are can be addressed by measuring the distribution of exoplanet masses and orbital periods. We report the occurrence rate of close-in planets (with orbital periods less…

A recent analysis of a Lunar Laser Ranging (LLR) data record spanning 38.7 yr revealed an anomalous increase of the eccentricity of the lunar orbit amounting to de/dt_meas = (9 +/- 3) 10^-12 yr^-1. The present-day models of the dissipative…

广义相对论与量子宇宙学 · 物理学 2011-07-26 Lorenzo Iorio

Reconstructions of the paleoclimate indicate that ancient climatic fluctuations on Earth are often correlated with variations in its orbital elements. However, the chaos inherent in the solar system's orbital evolution prevents numerical…

地球与行星天体物理 · 物理学 2024-02-15 Nathan A. Kaib , Sean N. Raymond

Remarkable global correlations exist between geometrical features of terrestrial surface on the Earth, current mean sea level and its geological internal processes whose origins have remained an essential goal in the Earth sciences.…

统计力学 · 物理学 2015-06-10 Abbas Ali Saberi

Humans like to party, and New Year celebrations are a great way to do that. However New Years celebrations that rely on an orbital year don't line up with those that use a Lunar Calendar, as there are currently 12.368 synodic months…

地球与行星天体物理 · 物理学 2023-04-03 Mark Popinchalk

Although the long-term numerical integrations of planetary orbits indicate that our planetary system is dynamically stable at least +/- Gyr, the dynamics of our Solar System includes both chaotic and stable motions: the large planets…

天体物理学 · 物理学 2009-11-13 Áron Süli , Rudolf Dvorak , Florian Freistetter

The Sun is expected to increase its radiant output by about 10% per billion years. The rate at which the radius of the Earth's orbit would need to increase in order to keep the present value of the Sun's radiant flux at the Earth constant…

科普物理 · 物理学 2017-11-27 Mark A. Wessels