Christopher Chyba

Christopher Chyba's AcademicInfluence.com Rankings

Christopher Chyba

Physics

#3078

World Rank

#4427

Historical Rank

#1162

USA Rank

Astronomy

#666

World Rank

#1196

Historical Rank

#311

USA Rank

physics Degrees

Christopher Chyba

Biology

#7034

World Rank

#9881

Historical Rank

#2150

USA Rank

biology Degrees

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Physics
Biology

Christopher Chyba's Degrees

Masters Physics University of California, Berkeley
PhD Physics University of California, Berkeley

Why Is Christopher Chyba Influential?

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According to Wikipedia, Christopher F. Chyba is an American astrobiologist and Professor of Astrophysical Sciences and International Affairs at the Princeton School of Public and International Affairs. He graduated from Swarthmore College in 1982, and studied mathematical physics at the University of Cambridge as a Marshall Scholar. He then received his Ph.D. in astronomy, with an emphasis in planetary science, from Cornell University in 1991. He was a White House Fellow on the National Security Council staff, and then serving in the Office of Science and Technology Policy from 1993 to 1995. He was a member of the SETI Institute Board of Trustees from 2005 to 2007.

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Christopher Chyba's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Endogenous production, exogenous delivery and impact-shock synthesis of organic molecules: an inventory for the origins of life (1992) (1055)
Voyager 2 at Neptune: Imaging Science Results (1989) (522)
Cometary delivery of organic molecules to the early Earth. (1990) (503)
The 1908 Tunguska explosion: atmospheric disruption of a stony asteroid (1993) (429)
The early faint sun paradox: organic shielding of ultraviolet-labile greenhouse gases (1997) (334)
Defining ‘Life’ (2004) (252)
Possible ecosystems and the search for life on Europa. (2001) (223)
Impact delivery and erosion of planetary oceans in the early inner Solar System (1990) (222)
Energy for microbial life on Europa (2000) (203)
Energy, chemical disequilibrium, and geological constraints on Europa. (2007) (170)
Amino acid survival in large cometary impacts (1999) (158)
Proliferation Rings: New Challenges to the Nuclear Nonproliferation Regime (2004) (158)
The cometary contribution to the oceans of primitive Earth (1987) (137)
Europa as an Abode of Life (2004) (135)
Astrobiology: The Study of the Living Universe (2005) (132)
Empirical constraints on the salinity of the europan ocean and implications for a thin ice shell (2007) (127)
Terrestrial mantle siderophiles and the lunar impact record (1991) (119)
The origin of life in the solar system: current issues. (1995) (119)
Production and Optical Constants of Ice Tholin from Charged Particle Irradiation of (1:6) C2H6/H2O at 77 K (1993) (118)
Geology of Europa (2004) (104)
Radar Detectability of a Subsurface Ocean on Europa (1998) (88)
Astrobiology and the Potential for Life on Europa (2009) (86)
Clathrate hydrates of oxidants in the ice shell of Europa. (2006) (86)
The violent environment of the origin of life. (1993) (85)
Life Without Photosynthesis (2001) (76)
Comets as a source of prebiotic organic molecules for the early Earth. (1997) (62)
Cometary Delivery of Biogenic Elements to Europa (2002) (57)
Seismic Detectability of a Subsurface Ocean on Europa (2001) (51)
Solid organic residues produced by irradiation of hydrocarbon-containing H2O and H2O/NH3 ices: infrared spectroscopy and astronomical implications. (1989) (49)
Extraterrestrial amino acids and terrestrial life (1990) (47)
Explosions of small Spacewatch objects in the Earth's atmosphere (1993) (45)
Triton's streaks as windblown dust (1990) (44)
Racemization of Meteoritic Amino Acids (1998) (42)
Infrared emission by organic grains in the coma of comet Halley (1987) (35)
Toward Biological Security (2002) (35)
Electrical energy sources for organic synthesis on the early earth (2005) (33)
Biotechnology and Bioterrorism: An Unprecedented World (2004) (33)
Applicability of Information Theory to the Quantification of Responses to Anthropogenic Noise by Southeast Alaskan Humpback Whales (2008) (33)
The heliocentric evolution of cometary infrared spectra: results from an organic grain model. (1989) (27)
Impact Deflection of Potentially Hazardous Asteroids Using Current Launch Vehicles (2007) (27)
The Nature of Life: Classical and Contemporary Perspectives from Philosophy and Science: Does ‘life’ have a definition? (2010) (27)
Tidal evolution in the Neptune-Triton system (1989) (25)
Rethinking Earth's Early Atmosphere (2005) (24)
Origins of life: A left-handed Solar System? (1997) (21)
Impact Delivery of Prebiotic Organic Matter to Planetary Surfaces (2006) (19)
On the obliquity and tidal heating of Triton (1989) (19)
Life on other moons (1997) (17)
A Verifiable Limited Test Ban for Anti-satellite Weapons (2010) (16)
Organic solids produced from simple C/H/O/N ices by charged particles: applications to the outer solar system. (1989) (14)
Kaluza–Klein unified field theory and apparent four‐dimensional space‐time (1985) (14)
Persistence of thin ice regions in Europa's ice crust (2002) (13)
Biotechnology and biosecurity (2008) (13)
Planetary Habitability and the Origins of Life (2000) (12)
Impact Delivery and Erosion of Planetary Oceans (1989) (12)
Cometary organics but no evidence for bacteria (1987) (12)
Proliferation-resistant biotechnology: an approach to improve biological security (2009) (12)
U.S. Nuclear Weapons Policy: Confronting Today's Threats (2007) (11)
Origins of life: Buried beginnings (1998) (11)
correction: Energy for microbial life on Europa (2000) (11)
Biological Security in a Changed World (2001) (10)
Depth to Unoxidized Material in the Martian Regolith (1989) (9)
Joule heating of the south polar terrain on Enceladus (2009) (9)
Monitoring the comprehensive Test Ban Treaty: Possible ambiguities due to meteorite impacts (1998) (9)
Cometary organic matter still a contentious issue (1988) (9)
New Technologies & Strategic Stability (2020) (7)
Energy conservation and Poynting's theorem in the homopolar generator (2015) (7)
Is there Life Elsewhere in the Universe (1999) (7)
Comets and prebiotic organic molecules on early earth (2006) (6)
Electric Power Generation from Earth’s Rotation through its Own Magnetic Field (2016) (6)
A World of Risk: The Current Environment for U.S. Nuclear Weapons Policy (2006) (6)
Biotechnology and the Challenge to Arms Control Arms Control Today (2019) (6)
Catastrophic Impacts and the Drake Equation (1997) (5)
The Origin of Life in a Cosmic Context (1997) (5)
Europa: Prospects for an Ocean and Life (2001) (5)
Countering the Early Faint Sun (2010) (5)
Simple calculation of the critical mass for highly enriched uranium and plutonium-239 (2014) (4)
Hubble Space Telescope observations of Europa in and out of eclipse (2010) (4)
The Europa Ocean Discovery mission (1997) (4)
The effect of coolant loss on current leads for superconducting magnets (1981) (3)
DNA synthesis security. (2012) (3)
Magnetic induction heating of planetary satellites: Analytical formulae and applications (2021) (3)
Don't Dismiss Astrobiology (2005) (3)
Death from the sky. (1993) (3)
Outer Planets/Solar Probe Project: Europa Orbiter (1999) (3)
Understanding the U.S. Nuclear Weapons Policy Debate (2009) (3)
Impact Gardening, Sputtering, Mixing, and Surface-Subsurface Exchange on Europa (2004) (3)
The pre- and post-accretion irradiation history of cometary ices. (1989) (3)
Introduction: The Search for Strategic Stability in a New Nuclear Era (2020) (3)
U.S. Military-Support Equipment Sales to the People's Republic of China (1981) (3)
The Early Faint Sun "Paradox" Revisited: Massive Greenhouse Effects on Early Earth and Mars? (1991) (2)
Impact Delivery of Organics to Mars (1999) (2)
Impact delivery of prebiotic organics to the early earth (2006) (2)
Create a COVID-19 commission. (2021) (2)
IMPACT DELIVERY OF ORGANICS TO MARS: OBLIQUE IMPACTS (2003) (2)
Seeding earth - Comets, oceans and life (1990) (2)
A two component model for thermal emission from organic grains in Comet Halley (1988) (2)
Mars Cratering Record as a Probe of Ancient Pressure Variations (1994) (2)
Time-dependent embeddings for Schwarzschild-like solutions to the gravitational field equations. (1982) (1)
Contingency and the Cosmic Perspective (2005) (1)
Life beyond Mars (1996) (1)
Carl Sagan (1934–1996) (1997) (1)
Atmospheric science. Rethinking Earth's early atmosphere. (2005) (1)
Internal-current Lorentz-force Heating of Astrophysical Objects (2021) (1)
Impact Delivery of Organic Molecules to the Early Earth and Implications for the Terrestrial Origins of Life (1989) (1)
Spore Survival During Abrasive Saltation on Mars: A Comment on Bak et al. (2022) (1)
Tidal Despinning Timescales in the Solar System (1998) (1)
Origins of Life / Primordial Soup (1992) (1)
Reply to “Comment on ‘Electric Power Generation from Earth’s Rotation through its Own Magnetic Field’ ” (2020) (1)
Introduction: Comets and the Origin of Life (1997) (1)
Biological terrorism and public health (2007) (1)
The Tunguska Explosion and Airbursting of Comets and Asteroids (1992) (0)
Moving Toward Security (2007) (0)
Energy Delivery via Meteors into Titan's Atmosphere (2021) (0)
Contents — F through K Geological Constraints on Tidal and Rotational Deformation On (0)
Index to Volume 29 (2004) (0)
History of U.S. Nuclear Weapons Doctrine and a Path Forward (2007) (0)
Carl Sagan - a tribute. (1997) (0)
Terrestrial accretion of prebiotic volatiles and organic molecules during the heavy bombardment (1991) (0)
An exobiologist's life search (1999) (0)
The cosmic origins of life on Earth. (1992) (0)
EXOBIOLOGY : LIFE ON OTHER MOONS (1997) (0)
The Geology and Astrobiology of Europa (Invited) (2009) (0)
Studies of volatiles and organic materials in early terrestrial and present-day outer solar system environments (1991) (0)
Reviewers for Volume 37 (2016) (0)
Comprehensive Test Ban Treaty: Next Steps, The (2000) (0)
Surface-Subsurface Exchange and the Prospects for Life on Europa (2001) (0)
Geologically agnostic approaches to constraining the ice shell thickness of Europa. (2007) (0)
On the Past, Present, and Future Role of Biology in NASA’s Exploration of our Solar System (2021) (0)
The Neptune-Triton System: Orbital Evolution Due to Planetary and Satellite Tides (1987) (0)
Collisions of Small Spacewatch Asteroids with the Earth (1993) (0)
Conclusion: Strategic Stability & Nuclear War (2020) (0)
The Hazy Details of Early Earth's Atmosphere—Response (2010) (0)
Reviewers for Volume 31 (2010) (0)
Terrestrial production vs. extraterrestrial delivery of prebiotic organics to the early Earth (1991) (0)
Comets in other planetary systems? (1995) (0)
Reviewers for Volume 36 (2007) (0)
Abstracts of the Oral Presentations from the 13th International Conference on the Origin of Life Oaxaca, Mexico, June 30 to July 5, 2002 (2004) (0)
Empirical Determination of Radiolytic Products in Simulated Europan Ices (2004) (0)
Don't dismiss astrobiology [5] (multiple letters) (2005) (0)
Possible ecosystems and the (2016) (0)
Review of Environmental Evolution: Effects of the Origin and Evolution of Life on Planet Earth, by Lynn Margulis and Lorraine Olendzenski (1994) (0)
Editors' Note (2004) (0)
Reviewers for Volume 35 (2006) (0)
A unified definition of biosecurity. Author's reply (2002) (0)
Planetary Protection: Two Relevant Terrestrial Examples (2002) (0)
A New Mechanism for the Lorentz-Force Heating of Astrophysical Objects: Application to Io (2020) (0)
Avoided objects: Freudian abstracts (1997) (0)
Unprecedented World (2004) (0)
Reviewers for Volume 27 (2014) (0)
Penetration of impacting comets and asteroids into the lower atmosphere (1992) (0)
Organic synthesis in the outer Solar System: Recent laboratory simulations for Titan, the Jovian planets, Triton and comets (1991) (0)
The 2005 National Research Council report on Preventing the Forward Contamination of Mars (2006) (0)

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Christopher Chyba's Academic­Influence.com Rankings

Christopher Chyba's Degrees

Why Is Christopher Chyba Influential?

Christopher Chyba's Published Works

Published Works

Other Resources About Christopher Chyba

What Schools Are Affiliated With Christopher Chyba?

Christopher Chyba's AcademicInfluence.com Rankings