Results 61 to 70 of about 2,361 (128)

First Astrometric Limits on Binary Planets and Exomoons Orbiting β Pictoris b

open access: yesThe Astronomical Journal
The search for exomoons, or moons in other star systems, has attracted significant interest in recent years, driven both by advancements in detection sensitivity and by the expanding population of known exoplanets. The β Pictoris system is a particularly
Isabella Macias   +2 more
doaj   +1 more source

The Hunt for Exomoons with Kepler (HEK): I. Description of a New Observational Project

open access: yes, 2012
Two decades ago, empirical evidence concerning the existence and frequency of planets around stars, other than our own, was absent. Since this time, the detection of extrasolar planets from Jupiter-sized to most recently Earth-sized worlds has blossomed ...
A. Schmitt   +49 more
core   +1 more source

Model for Determining the Origin of Lunar Volatiles Based on Their Composition: Application to NASA’s VIPER and Other Landed Missions

open access: yesThe Planetary Science Journal
Lunar volatiles provide a potentially pristine record of the history of the Earth–Moon system in terms of both geologic activity and delivery of volatiles from the outer solar system.
Kathleen Mandt   +16 more
doaj   +1 more source

Earthshine as an Illumination Source at the Moon

open access: yes, 2019
Earthshine is the dominant source of natural illumination on the surface of the Moon during lunar night, and at locations within permanently shadowed regions that never receive direct sunlight.
Glenar, David A.   +4 more
core   +1 more source

The three-body problem

open access: yes, 2014
The three-body problem, which describes three masses interacting through Newtonian gravity without any restrictions imposed on the initial positions and velocities of these masses, has attracted the attention of many scientists for more than 300 years ...
Musielak, Z. E., Quarles, B.
core   +1 more source

Evidence of an upper ionospheric electric field perturbation correlated with a gamma ray burst. [PDF]

open access: yesNat Commun, 2023
Piersanti M   +70 more
europepmc   +1 more source

Excitation and Propagation of Eccentricity Disturbances in Planetary Systems

open access: yes, 2004
The high eccentricities of the known extrasolar planets remain largely unexplained. We explore the possibility that eccentricities are excited in the outer parts of an extended planetary disk by encounters with stars passing at a few hundreds of AU ...
Dutrey A.   +4 more
core   +2 more sources

The outer planets - Fly-by prospects [PDF]

open access: yes
The projected benefits of flyby missions to the outer planets are discussed. Possible changes in existing theories of planetary composition as a result of such missions are also ...
Demarcus, W. D.
core   +1 more source

Synergies Between Venus & Exoplanetary Observations: Venus and Its Extrasolar Siblings. [PDF]

open access: yesSpace Sci Rev, 2023
Way MJ   +11 more
europepmc   +1 more source

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