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Accretion Processes  

Alessandro Morbidelli

Online publication date:
Jul 2018
Oxford Research Encyclopedia:
Planetary Science
In planetary science, accretion is the process in which solids agglomerate to form larger and larger objects, and eventually planets are produced. The initial conditions are a disc of gas ... More

Active Asteroids  

Henry Hsieh

Online publication date:
Feb 2020
Oxford Research Encyclopedia:
Planetary Science
The study of active asteroids is a relatively new field of study in Solar System science, focusing on objects with asteroid-like orbits but that exhibit comet-like activity. This field, ... More

Agreement on the Rescue and Return of Astronauts and Objects Launched into Outer Space  

Irmgard Marboe

Online publication date:
Jun 2019
Oxford Research Encyclopedia:
Planetary Science
The Agreement on the Rescue and Return of Astronauts and the Return of Objects Launched into Outer Space (ARRA) of 1968 deals with the obligation of states toward astronauts in distress or ... More

Astrology in Ancient Greek and Roman Culture  

Nicholas Campion

Online publication date:
May 2019
Oxford Research Encyclopedia:
Planetary Science
Astrology was a central feature of Greek and Roman culture. A knowledge of astrology’s claims, practices, and world view is essential for a full understanding of religion, politics, and ... More

Atmospheric Circulation on Venus  

Masaru Yamamoto

Online publication date:
Mar 2019
Oxford Research Encyclopedia:
Planetary Science
Venus is a slowly rotating planet with a thick atmosphere (~9.2 MPa at the surface). Ground- and satellite-based observations have shown atmospheric superrotation (atmospheric rotation much ... More

Atmospheric Electricity in the Solar System  

Karen Aplin and Georg Fischer

Online publication date:
Feb 2019
Oxford Research Encyclopedia:
Planetary Science
Electricity occurs in atmospheres across the Solar System planets and beyond, spanning spectacular lightning displays in clouds of water or dust, to more subtle effects of charge and ... More

Austrian National Space Law  

Cordula Steinkogler

Oxford Research Encyclopedia:
Planetary Science
This is an advance summary of a forthcoming article in the Oxford Encyclopedia of Planetary Science. Please check back later for the full article. The ... More

Business, Legal, and Policy Issues in Relation to Increased Private Space Activity  

Mark J. Sundahl

Online publication date:
Mar 2019
Oxford Research Encyclopedia:
Planetary Science
Throughout the history of human activity in outer space, the role of private companies has steadily grown, and, in some cases, companies have even replaced government agencies as the ... More

Chemical Weathering on Venus  

Mikhail Zolotov

Online publication date:
Aug 2019
Oxford Research Encyclopedia:
Planetary Science
Chemical and phase compositions of the surface of Venus could reflect a history of gas–rock and fluid–rock interactions, recent and past climate changes, and a loss of water from the ... More

Clouds in the Martian Atmosphere  

Anni Määttänen and Franck Montmessin

Oxford Research Encyclopedia:
Planetary Science
This is an advance summary of a forthcoming article in the Oxford Research Encyclopedia of Planetary Science. Please check back later for the full article. ... More

Comets  

Leonid V. Ksanfomality

Online publication date:
Nov 2018
Oxford Research Encyclopedia:
Planetary Science
Cometary nuclei are small, despite the cosmic scale of the comet tails that they produce. The nuclei have the ability to create rarefied atmospheres, extending as a tail to giant distances ... More

Depictions of the Moon in Western Visual Culture  

Jay M. Pasachoff and Roberta J.M. Olson

Online publication date:
Jun 2019
Oxford Research Encyclopedia:
Planetary Science
Since the landmark lunar landing of Apollo 11 on July 20, 1969, NASA’s Lunar Reconnaissance Orbiter (launched in 2009), and the Japanese Aerospace Exploration Agency’s Kaguya spacecraft ... More

Dust Devils on Earth and Mars  

Matthew R. Balme

Online publication date:
May 2019
Oxford Research Encyclopedia:
Planetary Science
Dust devils are rotating columns or cones of air, loaded with dust and other fine particles, that are most often found in arid or desert areas. They are common on both Mars and Earth, ... More

Evolution of the Martian Crust  

John C. Bridges

Oxford Research Encyclopedia:
Planetary Science
This is an advance summary of a forthcoming article in the Oxford Encyclopedia of Planetary Science. Please check back later for the full article. Mars, ... More

Exoplanets: Atmospheres of Hot Jupiters  

Dmitry V. Bisikalo, Pavel V. Kaygorodov, and Valery I. Shematovich

Online publication date:
Mar 2019
Oxford Research Encyclopedia:
Planetary Science
The history of exoplanetary atmospheres studies is strongly based on the observations and investigations of the gaseous envelopes of hot Jupiters—exoplanet gas giants that have masses ... More

Extraterrestrial Resources  

V.V. Shevchenko

Online publication date:
Jan 2020
Oxford Research Encyclopedia:
Planetary Science
Since the early 1990s, in analytical reviews, experts have increasingly been paying attention to the growing scarcity of rare and rare earth metals (REM) necessary for the development of ... More

The Formation of the Martian Moons  

Pascal Rosenblatt, Ryuki Hyodo, Francesco Pignatale, Antony Trinh, Sebastien Charnoz, Kevin Dunseath, Mariko Dunseath-Terao, and Hidenori Genda

Online publication date:
Mar 2020
Oxford Research Encyclopedia:
Planetary Science
The origin of the natural satellites or moons of the solar system is as challenging to unravel as the formation of the planets. Before the start of the space probe exploration era, this ... More

Geological Characteristics of the Moon  

Long Xiao and James W. Head

Online publication date:
Feb 2020
Oxford Research Encyclopedia:
Planetary Science
The geological characteristics of the Moon provide the fundamental data that permit the study of the geological processes that have formed and modified the crust, that record the state and ... More

Hot Planetary Coronas  

Valery I. Shematovich and Dmitry V. Bisikalo

Oxford Research Encyclopedia:
Planetary Science
This is an advance summary of a forthcoming article in the Oxford Research Encyclopedia of Planetary Science. Please check back later for the full article. ... More

Human Exploration and Development in the Solar System  

Wendell Mendell

Online publication date:
Aug 2018
Oxford Research Encyclopedia:
Planetary Science
Emergence of ballistic missile technology after World War II enabled human flight into the Earth’s orbit, fueling the imagination of those fascinated with science, technology, exploration, ... More

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