Journal of Astronomy and Space Sciences

About Journal of Astronomy and Space Sciences

The Journal of Astronomy and Space Sciences (JASS; J. Astron. Space Sci.) is the official publication of the Korean Space Science Society (KSSS), the most prestigious academic society in the fields of space science and space applications in Korea. JASS is an international journal devoted to the publication of fundamental and applied investigations in all aspects of spacerelated science and technology. It was launched in 1984 and is published quarterly. Each article published is assigned a unique DOI that serves to identify the article in the digital environment. JASS is an open access journal; consequently, the full texts of articles are free for all users to read and use. The papers published in JASS are accessible on the journal homepage (http://janss.kr), the DOAJ website, and the SAO/NASA ADS website. JASS has been indexed by KCI and SCOPUS since 2007 and 2012, respectively. Additionally, JASS was re-indexed by DOAJ and newly indexed in the ESCI (Emerging Sources Citation Index) by Clarivate Analytics in 2017. This journal is supported in part by a Grant-in-Aid for the publication of scientific research from the Korean Federation of Science and Technology Societies (KOFST).
Research Paper

Dec 15, 2025

Episodic Mass Wasting and Exposure of High Reflectance Material Within the Shackleton Crater Permanently Shadowed Region

Prasun Mahanti, Shuai Li, Mark S. Robinson, Thomas Watters, Paul Lucey, Brad Jolliff, Madeleine Manheim, Cordell Michaud

J. Astron. Space Sci. 2025;42(4):85-96.
https://doi.org/10.5140/JASS.2025.42.4.85

The Shackleton crater permanently shadowed region (PSR) exhibits high 1,064 nm reflectance and S-band radar circular polarization ratios (CPR), which previous studies interpreted as indicating the presence of water-ice or frost. In the absence of photogeologic evidence, alternative hypotheses offered for the reflective properties of the Shackleton crater PSR (mass wasting, presence of pure anorthosite, and interior blockiness) were not confirmed. ShadowCam has acquired high signal-to-noise ratio stereo images of Shackleton crater; we use these ...
Research Paper

Dec 15, 2025

Luminance Within Lunar Permanently Shadowed Regions

Robert Vernon Wagner, Mark Southwick Robinson

J. Astron. Space Sci. 2025;42(4):97-118.
https://doi.org/10.5140/JASS.2025.42.4.97

Exploration of the lunar poles is accelerating as multiple missions target these regions, with growing interest in studying the environment within permanently shadowed regions (PSRs)—areas at the poles that never receive direct sunlight. To prepare for these exploration activities within PSRs, we determined radiance levels in PSRs of various sizes and derived a conversion factor from ShadowCam radiance units to luminance, which is more suitable for evaluating human factors, as luminance accounts for the wavelength range to which humans are se...
Research Paper

Dec 15, 2025

Mesoscale Ionospheric Irregularity Oval at High Latitudes Observed by Global GNSS Networks (2010–2024)

Shun-Rong Zhang, Anthea J. Coster, Philip J. Erickson, Larisa P. Goncharenko, Jing Liu

J. Astron. Space Sci. 2025;42(4):119-134.
https://doi.org/10.5140/JASS.2025.42.4.119

This study investigates high-latitude ionospheric mesoscale irregularities associated with energetic particle precipitation and magnetosphere-ionosphere-thermosphere coupling processes within the auroral oval using ground-based Global Navigation Satellite Systems (GNSS) total electron content (TEC) measurements. This scale size is much larger than those associated with GNSS scintillations, which range from sub-kilometers (small scales) to > 10 km (large scales). Analyzing 15 yr of data from 2010 to 2024, we characterize, for the first time, ...

CURRENT ISSUE: Dec 2025, Vol. 42, No. 4

Research Paper Episodic Mass Wasting and Exposure of High Reflectance Material Within the Shackleton Crater Permanently Shadowed Region Prasun Mahanti, Shuai Li, Mark S. Robinson, Thomas Watters, Paul Lucey, Brad Jolliff, Madeleine Manheim, Cordell Michaud J. Astron. Space Sci. 2025;42(4):85-96. https://doi.org/10.5140/JASS.2025.42.4.85 HTML PDF PubReader	Research Paper Luminance Within Lunar Permanently Shadowed Regions Robert Vernon Wagner, Mark Southwick Robinson J. Astron. Space Sci. 2025;42(4):97-118. https://doi.org/10.5140/JASS.2025.42.4.97 HTML PDF PubReader
Research Paper Mesoscale Ionospheric Irregularity Oval at High Latitudes Observed by Global GNSS Networks (2010–2024) Shun-Rong Zhang, Anthea J. Coster, Philip J. Erickson, Larisa P. Goncharenko, Jing Liu J. Astron. Space Sci. 2025;42(4):119-134. https://doi.org/10.5140/JASS.2025.42.4.119 HTML PDF PubReader

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