Results 221 to 230 of about 3,590 (251)
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Acta Astronautica, 2000
Abstract The question of developing a space solar power system (SSPS) remains on the agenda as long as the energy supply of our planet is not secured for at least the next century. At the present time the oil and gas prices are low enough not to alarm the responsible governmental agencies and commercial enterprises. This may change in a few decades
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Abstract The question of developing a space solar power system (SSPS) remains on the agenda as long as the energy supply of our planet is not secured for at least the next century. At the present time the oil and gas prices are low enough not to alarm the responsible governmental agencies and commercial enterprises. This may change in a few decades
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Athena - A possible first step in a program of human Mars exploration
32nd Joint Propulsion Conference and Exhibit, 1996This paper discusses the "Athena" mission, a concept for an initial piloted mission to Mars that could be launched at low cost in the very near future. Athena is a double flyby, which uses two Mars gravity assist maneuvers to allow a round trip Mars mission to be performed with a single minimum energy trans-Mars injection burn.
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Mars exploration program strategy - 1995-2020
34th Aerospace Sciences Meeting and Exhibit, 1996Donna Shirley, Daniel McCleese
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Searching for biosignatures in sedimentary rocks from early Earth and Mars
Nature Reviews Earth & Environment, 2021Tanja Bosak, Jian Gong, John Grotzinger
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NASA’S MARS EXPLORATION PROGRAM: CURRENT ACTIVITIES AND FUTURE PLANS
Geological Society of America Abstracts with Programs, 2023Tiffany Morgan +2 more
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Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars
Science, 2022Ken Farley +2 more
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Layered subsurface in Utopia Basin of Mars revealed by Zhurong rover radar
Nature, 2022Chao Li, Yikang Zheng, Xin Wang
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Russian programs of planetary exploration: Mars-94/98 missions
Acta Astronautica, 1995A.A. Galeev +5 more
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Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars
Science, 2021Nicolas Mangold +2 more
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PRAGMATIC APPROACH TO A MANNED MARS EXPLORATION PROGRAM
2014Jean-Marc Salotti, Heidmann, Richard
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