Results 271 to 280 of about 10,201 (312)
Some of the next articles are maybe not open access.
Technology and Mars exploration
Space Programs and Technologies Conference, 1990The currently envisioned technology needs of the Space Exploration Initiative are surveyed. Earth-to-orbit transportation technology requirements are summarized. Space transportation needs regarding aerobraking, space-based engines, autonomous landing, autonomous rendezvous and docking, vehicle structures and cryogenic tankage, artificial gravity ...
John C. Mankins, Corinne Buoni
openaire +2 more sources
26th Aerospace Sciences Meeting, 1988
A systems study is underway of astronaut missions to Mars that could be accomplished over the next four decades. In addition to an emphasis on the transportation and facility infrastructure required for such missions, other relevant technologies and mission constraints are also being considered.
openaire +2 more sources
A systems study is underway of astronaut missions to Mars that could be accomplished over the next four decades. In addition to an emphasis on the transportation and facility infrastructure required for such missions, other relevant technologies and mission constraints are also being considered.
openaire +2 more sources
Rationale for Mars Exploration
Space 98, 1998Mars, the fourth planet from the sun, has already been explored quite extensively. There have been seven missions to Mars since 1964. There are many incentives for humans to continue to explore Mars. The purpose of this paper is to provide a rationale for Mars exploration.
openaire +2 more sources
Mars exploration advances: Missions to Mars - Mars base
30th Aerospace Sciences Meeting and Exhibit, 1992An overview is presented of Mars missions and related planning with attention given to four mission architectures in the light of significant limitations. Planned unpiloted missions are discussed including the Mars Orbital Mapping Mission, the Mars Rover Sample Return, the Mars Aeronomy Orbiter, and the Mars Environmental Survey.
Fred R. Dejarnette, Christopher P. Mckay
openaire +2 more sources
Space Programs and Technologies Conference, 1990
The scientific objectives and methods involved in a geologic exploration of Mars from a manned outpost are discussed. The constraints on outpost activities imposed by the limited crew size, limited amount of time available for science, the limited diversity of scientific expertise, and the competition between scientific disciplines are addressed. Three
openaire +2 more sources
The scientific objectives and methods involved in a geologic exploration of Mars from a manned outpost are discussed. The constraints on outpost activities imposed by the limited crew size, limited amount of time available for science, the limited diversity of scientific expertise, and the competition between scientific disciplines are addressed. Three
openaire +2 more sources
2015
A critical unknown is how life originated on Earth. Was it seeded from elsewhere, or did it generate spontaneously from indigenous nutrients? The current vogue is the belief system that life will evolve on a planet with water, carbon dioxide, and warmth, given a few hundred million years.
openaire +2 more sources
A critical unknown is how life originated on Earth. Was it seeded from elsewhere, or did it generate spontaneously from indigenous nutrients? The current vogue is the belief system that life will evolve on a planet with water, carbon dioxide, and warmth, given a few hundred million years.
openaire +2 more sources
Mars observer as a precursor to intensive exploration of Mars
Acta Astronautica, 1992The Mars Observer Mission, to be launched by the United States in September 1992, is designed to perform an extended orbital study of the Martian surface, atmosphere, climate, and gravitational and magnetic fields using a spacecraft in Mars orbit for one Martian year.
Thomas E. Thorpe+2 more
openaire +2 more sources
Balloons for the exploration of Mars
Advances in Space Research, 1993Abstract The Soviet mission to Mars envisioned in 1994 consists of two probes, each of which will carry a balloon described in the present paper. Since a balloon in the Martian atmosphere is driven essentially by thermal forces, the only possibility for a balloon flight is to stay at ceiling during the day and deposit half the mass of a guiderope ...
openaire +2 more sources
Biology and the Exploration of Mars
JAMA: The Journal of the American Medical Association, 1966After the moon, where do we travel next? Mars, many students of this problem believe, is the most logical site to begin planetary exploration. And this book is a series of reports prepared by subgroups of the Space Science Board of the National Academy of Sciences; the reports contain discussions of what types of experiments to attempt, how much can be
openaire +2 more sources