Results 151 to 160 of about 109,917 (327)

A strong seasonal dependence in the Martian hydrogen exosphere

, 2015
Hubble Space Telescope and Mars Express observed unexpected rapid changes in the Martian hydrogen exosphere involving a decrease in scattered Lyman α intensity in fall 2007 (solar longitude, Ls = 331°–345°). These changes detected were speculated to be a
D. Bhattacharyya, J. Clarke, J. Bertaux, J. Chaufray, M. Mayyasi   +4 more
semanticscholar   +1 more source

A Revised Upper Limit of NO_{2} in the Martian Atmosphere [PDF]

, 1965
Brian O'Leary
openalex   +1 more source

Hubble Space Telescope observations of Mars [PDF]

Hubble Space Telescope (HST) afforded the possibility of resolving features as small as 100 km on the Martian surface even when it is at the far point of its orbit. Therefore it is ideally suited for monitoring seasonal changes on the red planet.
Clancy, Todd, James, Philip B., Kahn, Ralph, Lee, Steve, Martin, Leonard, Singer, Robert, Zurek, Richard   +6 more
core   +1 more source

Beyond the horizon: Why space biology is the next great innovation opportunity

Experimental Physiology, EarlyView.
Carina Kern, Keith Siew
wiley   +1 more source

Multispectral Observations of Float Rocks Used to Investigate the Origin of Boulders on the Western Jezero Fan Front, Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 6, June 2025.
Abstract In Jezero crater, Mars, the Perseverance rover has explored the western fan and encountered loose pieces of rock separated from outcrops or “float” rocks. Comparing float rocks to in‐place outcrops can provide key insights into the crater's erosional history and the diversity of units in the Jezero watershed that Perseverance cannot visit in ...
B. S. Kathir, M. S. Rice, B. H. N. Horgan, L. Mandon, J. R. Johnson, K. M. Stack, A. P. Broz, N. Williams, N. Mangold, R. C. Wiens, J. I. Simon, C. C. Bedford, A. Bechtold, B. J. Garczynski, A. Vaughan, N. Randazzo, R. A. Yingst, S. A. Theuer, G. Paar, J. Martínez‐Frías, J. I. Núñez, T. Fouchet   +21 more
wiley   +1 more source

Properties of Solar Wind Current Sheets in the Martian Space Environment

The Astrophysical Journal
Transient current sheets (CSs) are common magnetic structures in the solar wind that can significantly disturb the planetary space environment and cause space weather phenomena.
Yangjun Chen, Mingyu Wu, Heying Wang, Peng E, Sudong Xiao, Guoqiang Wang, Xuesong Leng, Aimin Du, Tielong Zhang   +8 more
doaj   +1 more source

Survival of Microorganisms in a Simulated Martian Environment [PDF]

, 1964
C. A. Hagen, E. J. Hawrylewicz, R. Ehrlich   +2 more
openalex   +1 more source

Groundwater Sapping in Hack Crater (Mars): Geologic Evidence and Geophysical Modeling of Groundwater Stability

Journal of Geophysical Research: Planets, Volume 130, Issue 6, June 2025.
Abstract This study investigates Hack crater in Arabia Terra on Mars, which exhibits remarkable water‐related landforms, suggesting a period of intense water activity despite lacking a connection with large‐scale fluvial networks. Instead, short valleys within its walls display morphologies indicative of mass‐wasting processes driven by groundwater ...
B. De Toffoli, A.‐C. Plesa, E. Luzzi, E. Hauber   +3 more
wiley   +1 more source

Thermal Impacts of Atmospheric Gravity Waves in the Martian Thermosphere

Journal of Geophysical Research: Planets, Volume 130, Issue 6, June 2025.
Abstract Observations of the Martian thermosphere have revealed small‐scale, large amplitude fluctuations believed to be associated with atmospheric gravity waves (GWs). Previous analysis of the MAVEN Neutral Gas and Ion Mass Spectrometer (NGIMS) data has described the overall behavior of these waves and their consistency with GW theory. One of the key
Scott L. England, Aishwarya Kumar, Guiping Liu, Mehdi Benna   +3 more
wiley   +1 more source

Electron Structures in Titan's Induced Magnetosphere and Low‐Frequency Wave Activity

Journal of Geophysical Research: Planets, Volume 130, Issue 6, June 2025.
Abstract The interaction of Titan's ionosphere with Saturn's magnetosphere leads to a mix of perturbed electromagnetic fields and accelerated and thermalized plasma in the induced magnetosphere. The complexity of this region has been noted in previous studies.
Konstantin Kim, Niklas J. T. Edberg, Ronan Modolo, Michiko Morooka, R. J. Wilson, Andrew J. Coates, Anne Wellbrock, Jan‐Erik Wahlund, Erik Vigren, Ali Sulaiman, Cesar Bertucci, Ravindra Desai, Leonardo Regoli   +12 more
wiley   +1 more source