Jupiter: friend or foe?
Article
Article Title | Jupiter: friend or foe? |
---|---|
ERA Journal ID | 1052 |
Article Category | Article |
Authors | Horner, Jonti (Author) and Jones, Barrie W. (Author) |
Journal Title | Astronomy and Geophysics |
Journal Citation | 49 (1), pp. 1.22-1.27 |
Number of Pages | 6 |
Year | 2008 |
Place of Publication | Oxford, United Kingdom |
ISSN | 0035-8738 |
1366-8781 | |
1468-4004 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/j.1468-4004.2008.49122.x |
Web Address (URL) | http://astrogeo.oxfordjournals.org/content/49/1/1.22.full.pdf+html |
Abstract | The idea that Jupiter has shielded the Earth from potentially catastrophic impacts has long permeated the public and scientific mind. But has it shielded us? We are carrying out the first detailed examination of the degree of shielding provided by Jupiter and have obtained some surprising results. Rather than Jupiter acting as a defensive presence, we found that it actually makes little difference - but if Jupiter were significantly smaller, the impact rate experienced by the Earth would be considerably enhanced. Indeed, it seems that a giant planet in the outer reaches of a planetary system can actually pose a threat to the habitability of terrestrial worlds closer to the system's parent star. |
Keywords | planets; Jupiter; habitation; evolution; extraterrestrial life |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
370507. Planetary geology | |
510101. Astrobiology | |
Public Notes | © 2008 Royal Astronomical Society. |
Byline Affiliations | Open University, United Kingdom |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2703/jupiter-friend-or-foe
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