Class information for:
Level 1: PLANETARY PROTECTION//BIOTECHNOL PLANETARY PROTECT GRP//PANSPERMIA

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
17877 578 36.1 55%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
1 4 ECONOMICS//EDUCATION & EDUCATIONAL RESEARCH//PSYCHOL 3876184
594 3       ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES//UV B RADIATION//ORIGIN OF LIFE 14910
2882 2             DEINOCOCCUS RADIODURANS//ASTROBIOL EXTREMOPHILES//PLANETARY PROTECTION 2848
17877 1                   PLANETARY PROTECTION//BIOTECHNOL PLANETARY PROTECT GRP//PANSPERMIA 578

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PLANETARY PROTECTION authKW 1935690 10% 62% 59
2 BIOTECHNOL PLANETARY PROTECT GRP address 1350530 7% 61% 42
3 PANSPERMIA authKW 1194690 7% 54% 42
4 LITHOPANSPERMIA authKW 960508 3% 91% 20
5 SPACECRAFT ASSEMBLY FACILITY authKW 475453 2% 100% 9
6 SPACE LIFE SCI address 369039 7% 17% 40
7 ASTROBIOLOGY journal 347274 14% 8% 79
8 EXPOSE E authKW 211313 1% 100% 4
9 MTA SE GRP BIOPHYS address 190177 1% 60% 6
10 SPACE CONDITIONS authKW 188669 1% 71% 5

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Astronomy & Astrophysics 7735 48% 0% 277
2 Biology 6645 30% 0% 176
3 Engineering, Aerospace 5074 14% 0% 83
4 Geosciences, Multidisciplinary 4790 34% 0% 195
5 Microbiology 1126 19% 0% 112
6 Meteorology & Atmospheric Sciences 835 11% 0% 65
7 Biotechnology & Applied Microbiology 117 7% 0% 43
8 BIOLOGY, MISCELLANEOUS 32 0% 0% 1
9 MEDICINE, MISCELLANEOUS 32 0% 0% 1
10 Biophysics 31 4% 0% 22

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 BIOTECHNOL PLANETARY PROTECT GRP 1350530 7% 61% 42
2 SPACE LIFE SCI 369039 7% 17% 40
3 MTA SE GRP BIOPHYS 190177 1% 60% 6
4 GRP ASTROBIOL 172564 1% 47% 7
5 BUCKINGHAM ASTROBIOL 158478 1% 50% 6
6 AEROSP MED 143642 10% 5% 57
7 RADIAT BIOL SECT 117653 1% 32% 7
8 AEROSP MED PHOTO EXOBIOL 105656 0% 100% 2
9 CARDIFF BIOL SCI 105656 0% 100% 2
10 LANGLEY SPACE 105656 0% 100% 2

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ASTROBIOLOGY 347274 14% 8% 79
2 INTERNATIONAL JOURNAL OF ASTROBIOLOGY 174095 7% 9% 38
3 ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES 38040 5% 3% 27
4 JOURNAL OF THE IEST 13579 1% 9% 3
5 ADVANCES IN SPACE RESEARCH 13119 8% 1% 49
6 ADVANCES IN SPACE RESEARCH-SERIES 6324 4% 1% 21
7 ICARUS 4418 5% 0% 28
8 MICROBIOME 4095 1% 2% 4
9 COSMIC RESEARCH 3178 1% 1% 7
10 ORIGINS OF LIFE AND EVOLUTION OF THE BIOSPHERE 3111 1% 1% 4

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 PLANETARY PROTECTION 1935690 10% 62% 59 Search PLANETARY+PROTECTION Search PLANETARY+PROTECTION
2 PANSPERMIA 1194690 7% 54% 42 Search PANSPERMIA Search PANSPERMIA
3 LITHOPANSPERMIA 960508 3% 91% 20 Search LITHOPANSPERMIA Search LITHOPANSPERMIA
4 SPACECRAFT ASSEMBLY FACILITY 475453 2% 100% 9 Search SPACECRAFT+ASSEMBLY+FACILITY Search SPACECRAFT+ASSEMBLY+FACILITY
5 ASTROBIOLOGY 219876 11% 6% 66 Search ASTROBIOLOGY Search ASTROBIOLOGY
6 EXPOSE E 211313 1% 100% 4 Search EXPOSE+E Search EXPOSE+E
7 SPACE CONDITIONS 188669 1% 71% 5 Search SPACE+CONDITIONS Search SPACE+CONDITIONS
8 BIOMEX 169048 1% 80% 4 Search BIOMEX Search BIOMEX
9 CLOSED HABITAT 169048 1% 80% 4 Search CLOSED+HABITAT Search CLOSED+HABITAT
10 EXTREMOPHILIC MICROORGANISMS 165084 1% 63% 5 Search EXTREMOPHILIC+MICROORGANISMS Search EXTREMOPHILIC+MICROORGANISMS

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 MOELLER, R , REITZ, G , NICHOLSON, WL , HORNECK, G , (2012) MUTAGENESIS IN BACTERIAL SPORES EXPOSED TO SPACE AND SIMULATED MARTIAN CONDITIONS: DATA FROM THE EXPOSE-E SPACEFLIGHT EXPERIMENT PROTECT.ASTROBIOLOGY. VOL. 12. ISSUE 5. P. 457-+ 37 71% 11
2 OLSSON-FRANCIS, K , COCKELL, CS , (2010) EXPERIMENTAL METHODS FOR STUDYING MICROBIAL SURVIVAL IN EXTRATERRESTRIAL ENVIRONMENTS.JOURNAL OF MICROBIOLOGICAL METHODS. VOL. 80. ISSUE 1. P. 1-13 43 63% 17
3 HORNECK, G , MOELLER, R , CADET, J , DOUKI, T , MANCINELLI, RL , NICHOLSON, WL , PANITZ, C , RABBOW, E , RETTBERG, P , SPRY, A , ET AL (2012) RESISTANCE OF BACTERIAL ENDOSPORES TO OUTER SPACE FOR PLANETARY PROTECTION PURPOSES-EXPERIMENT PROTECT OF THE EXPOSE-E MISSION.ASTROBIOLOGY. VOL. 12. ISSUE 5. P. 445-+ 31 76% 18
4 KAWAGUCHI, Y , YANG, YJ , KAWASHIRI, N , SHIRAISHI, K , TAKASU, M , NARUMI, I , SATOH, K , HASHIMOTO, H , NAKAGAWA, K , TANIGAWA, Y , ET AL (2013) THE POSSIBLE INTERPLANETARY TRANSFER OF MICROBES: ASSESSING THE VIABILITY OF DEINOCOCCUS SPP. UNDER THE ISS ENVIRONMENTAL CONDITIONS FOR PERFORMING EXPOSURE EXPERIMENTS OF MICROBES IN THE TANPOPO MISSION.ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES. VOL. 43. ISSUE 4-5. P. 411-428 28 67% 5
5 FAJARDO-CAVAZOS, P , SCHUERGER, AC , NICHOLSON, WL , (2007) TESTING INTERPLANETARY TRANSFER OF BACTERIA BETWEEN EARTH AND MARS AS A RESULT OF NATURAL IMPACT PHENOMENA AND HUMAN SPACEFLIGHT ACTIVITIES.ACTA ASTRONAUTICA. VOL. 60. ISSUE 4-7. P. 534-540 27 82% 6
6 VENKATESWARAN, K , LA DUC, MT , HORNECK, G , (2014) MICROBIAL EXISTENCE IN CONTROLLED HABITATS AND THEIR RESISTANCE TO SPACE CONDITIONS.MICROBES AND ENVIRONMENTS. VOL. 29. ISSUE 3. P. 243 -249 26 70% 3
7 NICHOLSON, WL , (2009) ANCIENT MICRONAUTS: INTERPLANETARY TRANSPORT OF MICROBES BY COSMIC IMPACTS.TRENDS IN MICROBIOLOGY. VOL. 17. ISSUE 6. P. 243 -250 35 56% 31
8 RABBOW, E , PARPART, A , REITZ, G , (2016) THE PLANETARY AND SPACE SIMULATION FACILITIES AT DLR COLOGNE.MICROGRAVITY SCIENCE AND TECHNOLOGY. VOL. 28. ISSUE 3. P. 215 -229 28 64% 0
9 RETTBERG, P , MOISSL-EICHINGER, C , COCKELL, CS , (2016) VENTURING INTO NEW REALMS? MICROORGANISMS IN SPACE.FEMS MICROBIOLOGY REVIEWS. VOL. 40. ISSUE 5. P. 722 -737 48 34% 1
10 WASSMANN, M , MOELLER, R , RABBOW, E , PANITZ, C , HORNECK, G , REITZ, G , DOUKI, T , CADET, J , STAN-LOTTER, H , COCKELL, CS , ET AL (2012) SURVIVAL OF SPORES OF THE UV-RESISTANT BACILLUS SUBTILIS STRAIN MW01 AFTER EXPOSURE TO LOW-EARTH ORBIT AND SIMULATED MARTIAN CONDITIONS: DATA FROM THE SPACE EXPERIMENT ADAPT ON EXPOSE-E.ASTROBIOLOGY. VOL. 12. ISSUE 5. P. 498-+ 24 77% 4

Classes with closest relation at Level 1


Rank Class id link
1 13967 ASTROBIOL EXTREMOPHILES//AREA GEODINAM INTERNA//CHROOCOCCIDIOPSIS
2 37434 PL MATH ASTRON//FREE ENERGY HELMHOLTZ ENERGY//ISUA IRON FORMATION
3 35667 GENETIC INSTRUCTIONS//EXCLUSION ZONE EZ//BIOLOGICAL DENITRIFICATION INHIBITION
4 6037 MOL MICROBIAL STRUCT BIOL//SPORES//SPORE RESISTANCE
5 11875 CARBONACEOUS CHONDRITES//MURCHISON METEORITE//ASYMMETRIC PHOTOLYSIS
6 23581 CALORIMETRIC GAS SENSOR//HOMELAND SECUR//SPORICIDE
7 11655 MARTIAN METEORITES//SHERGOTTITE//METEORITICS & PLANETARY SCIENCE
8 15652 DEINOCOCCUS RADIODURANS//DEINOCOCCUS//BIO ENVIRONM TECHNOL
9 14977 SETI//EXTRATERRESTRIAL INTELLIGENCE//FERMI PARADOX
10 15476 ENVIRONM BIOL LIFE SUPPORT TECHNOL//BIOSPHERE 2//CLOSED ECOLOGICAL SYSTEMS

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