Results 281 to 290 of about 639,433 (345)
Some of the next articles are maybe not open access.

High and low thrust mission analysis for a Mars exploration program

Astrodynamics Conference, 1990
The purpose of the study is to identify limits, trends, and sensitivities of Mars Transportation System performance over several Mars mission opportunities. Two Mars Transfer Vehicle (MTV) configurations utilizing different propulsion systems (Chemical/Aerobrake and NEP - Nuclear Electric Propulsion) are outlined.
Jerry L. Horsewood   +2 more
openaire   +2 more sources

Mars Technology Program Communications and Tracking Technologies for Mars Exploration

2006 IEEE Aerospace Conference, 2006
The future of the exploration of Mars see an unprecedented increase in the volume of data generated by an increasingly capable host of science instruments on various rovers, aerobots, orbiters and eventually humans on Mars. To return these large volumes of data to Earth, communication links with data-rate capabilities in the multiple megabits-per ...
openaire   +2 more sources

Expedition Mars: A Mars Analogue Program Dedicated to Advancing Competency in Human Planetary Surface Exploration

41st International Conference on Environmental Systems, 2011
Mars analogue research facilities are excellent tools for advancing comparative planetology scientific research and exploration methodologies, as well as for investigating and devising countermeasures for the challenges astronauts may encounter while exploring the Martian surface.
Ryan L. Kobrick   +5 more
openaire   +1 more source

China's first-phase Mars Exploration Program: Yinghuo-1 orbiter

Planetary and Space Science, 2013
Abstract China's first Mars orbiter Yinghuo-1 associated with Russia's unmanned sample return spacecraft Phobos-Grunt will be jointly launched in October 2011. Yinghuo-1 orbiter will principally aim to detect Martian space magnetosphere, ionosphere, plasma distribution, ions escape mechanism, surface topography and sandstorms, and gravity field near ...
Min Zhong   +4 more
openaire   +2 more sources

Mechanisms for Lowering Tethered Payloads: Lessons Learned from the Mars Exploration Program

2008 IEEE Aerospace Conference, 2008
Compact, lightweight, highly reliable lowering devices capable of paying out tether to lower a payload some number of meters with exacting performance, from a balloon or a parachute or part of a spacecraft, typically appear in systems so unique that there is little historical precedent to build upon when preparing designs.
M.J. Gradziel, K.J. Holgerson
openaire   +2 more sources

Role of Launch Vehicles in Moon-Mars Exploration Program

Journal of Aerospace Engineering, 1998
Currently available launch vehicles cannot support logistically the human exploration of the Moon and Mars in the next century. They are too small and too expensive for this job. Past studies have shown that the costs of programs leading to the acquisition and operation of extraterrestrial bases are driven by the space transportation system, which ...
openaire   +2 more sources

Scientific Objectives of China-Russia Joint Mars Exploration Program YH-1

Chinese Astronomy and Astrophysics, 2010
Abstract Compared with other planets, Mars is a planet most similar with the earth and most possible to find the extraterrestrial life on it, and therefore especially concerned about by human beings. In recent years, some countries have launched Mars probes and announced their manned Mars exploration programs.
Chengli Huang   +7 more
openaire   +2 more sources

Introducing Critical Observation Skills Using NASA's Mars Exploration Program in a Small Introductory Class

Journal of Geoscience Education, 2007
The arrival of multiple US and European planetary exploration missions at Mars (Squires et al., 2004a, 2004b; Clery, 2004) provided an opportunity to introduce students to geologic observation in general, and to planetary geology in particular, with all the excitement involved in “real-time” remote data acquisition from another planet.
Louise H. Kellogg, Robert A. Zierenberg
openaire   +2 more sources

Mars Rover Models - A Program to Enrich Teaching Space Science, Planetary Exploration and Robotics in Elementary and Middle School

43rd AIAA Aerospace Sciences Meeting and Exhibit, 2005
The present aerospace engineering and science workforce is ageing. It is not clear that the US education system will produce enough qualified replacements to meet the need in the near future. Unfortunately, by the time many students get to high school, it is often too late to get them pointed toward an engineering or science career.
Edgar A. Bering   +5 more
openaire   +2 more sources

Brain and other central nervous system tumor statistics, 2021

Ca-A Cancer Journal for Clinicians, 2021
Carol Kruchko   +2 more
exaly  

Home - About - Disclaimer - Privacy