Cosmic radiation exposure of biological test systems during the EXPOSE-R mission

Berger, Thomas; Hajek, Michael; Bilski, P.; Reitz, Günther

doi:10.1017/s1473550414000548

Cited by 18 publications

(12 citation statements)

References 20 publications

(52 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For such experiments, a limitation is that accurate, "real-time" dosimetry sensors have not been implemented for both VUV and particles. On current facilities such as EXPOSE, only sensors for UV down to 220 nm are included, while radiation is monitored with both the R3D experiment (Dachev et al 2015) and passive thermoluminescence dosimeters located beneath the sample carriers to determine the dose levels for maximum shielding (Berger et al 2015). Due to discontinuous measurements from UV sensors during the EXPOSE campaigns, simulations based on orbits and shadows cast on the samples were necessary to interpret the results (Rabbow et al 2015b;).…”

Section: Limitations Of Current Astrochemistry Facilitiesmentioning

confidence: 99%

Space as a Tool for Astrobiology: Review and Recommendations for Experimentations in Earth Orbit and Beyond

et al. 2017

View full text Add to dashboard Cite

The space environment is regularly used for experiments addressing astrobiology research goals. The specific conditions prevailing in Earth orbit and beyond, notably the radiative environment (photons and energetic particles) and the possibility to conduct long-duration measurements, have been the main motivations for developing experimental concepts to expose chemical or biological samples to outer space, or to use the reentry of a spacecraft on Earth to simulate the fall of a meteorite. This paper represents an overview of past and current research in astrobiology conducted in Earth orbit and beyond, with a special focus on ESA missions such as Biopan, STONE (on Russian FOTON capsules) and EXPOSE facilities (outside the International Space Station). The future of exposure platforms is discussed, notably how they can be improved for better science return, and how to incorporate the use of small satellites such as those built in cubesat format.

show abstract

Section: Limitations Of Current Astrochemistry Facilitiesmentioning

confidence: 99%

Space as a Tool for Astrobiology: Review and Recommendations for Experimentations in Earth Orbit and Beyond

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Cosmic radiation exposure Dosimetry of the ionizing radiation was performed with two experiments: the active instrument R3DR (Dachev et al 2014) and the passive detectors of the DOSIS experiment (Berger et al 2014). The passive dosimeters allowed an estimation of the total mission dose and its distribution over the EXPOSE-R facility.…”

Section: Micrometeoritesmentioning

confidence: 99%

“…TLDs were analysed after retrieval. The total mission dose ranged from 225 to 320 mGy (Berger et al 2014).…”

Section: Micrometeoritesmentioning

confidence: 99%

The astrobiological mission EXPOSE-R on board of the International Space Station

Rabbow¹,

Rettberg²,

Barczyk³

et al. 2014

International Journal of Astrobiology

View full text Add to dashboard Cite

show abstract

“…Owing to computer failure some data were lost, so that the total UV fluence was calculated from ISS orbit parameters . The cosmic ray dose ranged from 225 to 320 mGy, depending on the position of the samples in the trays (Berger et al 2014). After 682 days of exposure to space conditions, the EXPOSE-R facility was removed on January 21, 2011 and transported to the inside of the ISS.…”

Section: Flight Protocolmentioning

confidence: 99%

Survival of Spores ofTrichoderma longibrachiatumin Space: data from the Space Experiment SPORES on EXPOSE-R

Neuberger

Lux-Endrich

Panitz

et al. 2014

International Journal of Astrobiology

View full text Add to dashboard Cite

In the space experiment 'Spores in artificial meteorites' (SPORES), spores of the fungus Trichoderma longibrachiatum were exposed to low-Earth orbit for nearly 2 years on board the EXPOSE-R facility outside of the International Space Station. The environmental conditions tested in space were: space vacuum at 10 −7 -10 −4 Pa or argon atmosphere at 10 5 Pa as inert gas atmosphere, solar extraterrestrial ultraviolet (UV) radiation at λ > 110 nm or λ > 200 nm with fluences up to 5.8 × 10 8 J m −2 , cosmic radiation of a total dose range from 225 to 320 mGy, and temperature fluctuations from −25 to +50°C, applied isolated or in combination. Comparable control experiments were performed on ground. After retrieval, viability of spores was analysed by two methods: (i) ethidium bromide staining and (ii) test of germination capability. About 30% of the spores in vacuum survived the space travel, if shielded against insolation. However, in most cases no significant decrease was observed for spores exposed in addition to the full spectrum of solar UV irradiation. As the spores were exposed in clusters, the outer layers of spores may have shielded the inner part. The results give some information about the likelihood of lithopanspermia, the natural transfer of micro-organisms between planets. In addition to the parameters of outer space, sojourn time in space seems to be one of the limiting parameters.

show abstract

Cosmic radiation exposure of biological test systems during the EXPOSE-R mission

Cited by 18 publications

References 20 publications

Space as a Tool for Astrobiology: Review and Recommendations for Experimentations in Earth Orbit and Beyond

Space as a Tool for Astrobiology: Review and Recommendations for Experimentations in Earth Orbit and Beyond

The astrobiological mission EXPOSE-R on board of the International Space Station

Survival of Spores ofTrichoderma longibrachiatumin Space: data from the Space Experiment SPORES on EXPOSE-R

Contact Info

Product

Resources

About