J. Andy Spry

614 total citations
23 papers, 210 citations indexed

About

J. Andy Spry is a scholar working on Astronomy and Astrophysics, Physiology and Aerospace Engineering. According to data from OpenAlex, J. Andy Spry has authored 23 papers receiving a total of 210 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Astronomy and Astrophysics, 7 papers in Physiology and 6 papers in Aerospace Engineering. Recurrent topics in J. Andy Spry's work include Planetary Science and Exploration (13 papers), Space Science and Extraterrestrial Life (10 papers) and Spaceflight effects on biology (7 papers). J. Andy Spry is often cited by papers focused on Planetary Science and Exploration (13 papers), Space Science and Extraterrestrial Life (10 papers) and Spaceflight effects on biology (7 papers). J. Andy Spry collaborates with scholars based in United States, United Kingdom and Italy. J. Andy Spry's co-authors include Kasthuri Venkateswaran, Parag Vaishampayan, Peter S. Goldfarb, Alan Wiseman, Myron T. La Duc, Gary L. Andersen, Yvette M. Piceno, David R. Livingstone, Christopher Herring and Shariff Osman and has published in prestigious journals such as Applied and Environmental Microbiology, Biochemical Society Transactions and Nature Microbiology.

In The Last Decade

J. Andy Spry

20 papers receiving 200 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
J. Andy Spry United States	7	76	67	52	51	33	23	210
Robert Koukol United States	7	164 2.2×	24 0.4×	126 2.4×	102 2.0×	22 0.7×	18	306
Kevin Wheeler United States	4	26 0.3×	18 0.3×	72 1.4×	112 2.2×	24 0.7×	6	309
Teresa Mayer Germany	5	36 0.5×	41 0.6×	123 2.4×	70 1.4×	8 0.2×	6	242
J. Tichá Czechia	8	70 0.9×	72 1.1×	4 0.1×	20 0.4×	49 1.5×	41	344
Rodrigo A. Mancilla Chile	9	30 0.4×	11 0.2×	12 0.2×	72 1.4×	9 0.3×	13	291
D. Barreca Italy	7	51 0.7×	19 0.3×	30 0.6×	230 4.5×	9 0.3×	10	422
Richard Barker United States	9	23 0.3×	14 0.2×	99 1.9×	44 0.9×	6 0.2×	17	249
Joost W. Aerts Netherlands	6	66 0.9×	4 0.1×	18 0.3×	85 1.7×	14 0.4×	9	253
L.M. Ruffe United States	9	53 0.7×	4 0.1×	52 1.0×	22 0.4×	15 0.5×	12	345
Anirudha R. Dixit United States	8	23 0.3×	5 0.1×	55 1.1×	17 0.3×	6 0.2×	12	275

Countries citing papers authored by J. Andy Spry

Since Specialization

Citations

This map shows the geographic impact of J. Andy Spry's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J. Andy Spry with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Andy Spry more than expected).

Fields of papers citing papers by J. Andy Spry

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Andy Spry. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J. Andy Spry. The network helps show where J. Andy Spry may publish in the future.

Co-authorship network of co-authors of J. Andy Spry

This figure shows the co-authorship network connecting the top 25 collaborators of J. Andy Spry. A scholar is included among the top collaborators of J. Andy Spry based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with J. Andy Spry. J. Andy Spry is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Spry, J. Andy, et al.. (2025). Status update of NASAs assessment of the biological contamination threat of crewed mars surface missions. Life Sciences in Space Research. 45. 25–33.

Spry, J. Andy, et al.. (2023). Development of a NASA roadmap for planetary protection to prepare for the first human missions to Mars. Life Sciences in Space Research. 38. 1–7. 6 indexed citations

Benardini, James N., et al.. (2023). Updates in NASA Policy and Practice in Planetary Protection. 1–8.

Spry, J. Andy. (2022). Current status and future perspectives in planetary protection. Nature Microbiology. 7(4). 475–477. 2 indexed citations

Spry, J. Andy, et al.. (2021). Incorporation of Planetary Protection Knowledge Gaps into Agency Capability Development Planning. ThinkTech (Texas Tech University). 1 indexed citations

Kminek, Gerhard, et al.. (2019). The International Planetary Protection Handbook. elib (German Aerospace Center). 205. e1–e120. 10 indexed citations

Conley, Catharine A., et al.. (2019). Updating Planetary Protection Considerations and Policies for Mars Sample Return. Space Policy. 49. 101322–101322. 1 indexed citations

Nuding, D. L., R. V. Gough, Kasthuri Venkateswaran, J. Andy Spry, & Margaret A. Tolbert. (2017). Laboratory Investigations on the Survival of Bacillus subtilis Spores in Deliquescent Salt Mars Analog Environments. Astrobiology. 17(10). 997–1008. 18 indexed citations

Spry, J. Andy, et al.. (2016). Report on the COSPAR Workshop on Refining Planetary Protection Requirements for Human Missions. cosp. 41. 3 indexed citations

10.

Race, Margaret S., et al.. (2015). Planetary Protection Knowledge Gaps for Human Extraterrestrial Missions: Workshop Report. NASA Technical Reports Server (NASA). 3 indexed citations

11.

Venkateswaran, Kasthuri, Parag Vaishampayan, James N. Benardini, Alejandro P. Rooney, & J. Andy Spry. (2014). Deposition of Extreme-Tolerant Bacterial Strains Isolated during Different Phases of Phoenix Spacecraft Assembly in a Public Culture Collection. Astrobiology. 14(1). 24–26. 12 indexed citations

12.

Chen, Fei, et al.. (2012). Planetary Protection Concerns During Pre-Launch Radioisotope Power System Final Integration Activities. NASA Technical Reports Server (NASA). 1 indexed citations

13.

Stam, Cornelis J., et al.. (2012). A molecular method to assess bioburden embedded within silicon-based resins used on modern spacecraft materials. International Journal of Astrobiology. 11(3). 141–145. 4 indexed citations

14.

Duc, Myron T. La, Shariff Osman, Parag Vaishampayan, et al.. (2009). Comprehensive Census of Bacteria in Clean Rooms by Using DNA Microarray and Cloning Methods. Applied and Environmental Microbiology. 75(20). 6559–6567. 65 indexed citations

15.

Pillinger, J. M., et al.. (2005). The microbiology of spacecraft hardware: Lessons learned from the planetary protection activities on the Beagle 2 spacecraft. Research in Microbiology. 157(1). 19–24. 17 indexed citations

16.

Spry, J. Andy, et al.. (2005). Atmospheric entry simulations of Mars lander bioload—experiments in support of Beagle 2. Research in Microbiology. 157(1). 25–29. 2 indexed citations

17.

Spry, J. Andy, J. M. Pillinger, & C. T. Pillinger. (2004). Planetary Protection for the Beagle2 Mars Lander Mission. cosp. 35. 4223. 2 indexed citations

18.

Herring, Christopher, et al.. (1995). Evidence for the existence of cytochrome P450 gene families (CYP1A, 3A, 4A, 11A) and modulation of gene expression (CYP1A) in the mussel Mytilus spp.. Marine Environmental Research. 39(1-4). 21–26. 51 indexed citations

19.

Goldfarb, Peter S., et al.. (1989). Detection of mRNA sequences homologous to the human glutathione peroxidase and rat cytochrome P-450IVA1 genes in Mytilus edulis. Marine Environmental Research. 28(1-4). 57–60. 6 indexed citations

20.

Spry, J. Andy, David R. Livingstone, Alan Wiseman, G. Gordon Gibson, & Peter S. Goldfarb. (1989). Cytochrome P-450 gene expression in the common mussel Mytilus edulis. Biochemical Society Transactions. 17(6). 1013–1014. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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