Results 61 to 70 of about 93,784 (190)
arXiv, 2020 Recent publications discuss the size of chemical rockets for long-distance travel, to be launched from a planet. Here I point out that such a rocket cannot be tall and slim but will be short and fat.
arxiv
Astronomical Journal, 2019 We observed short-period comet 252P/LINEAR post-perihelion during its 2016 passage, which presented a favorable opportunity to survey its chemical composition at a close Earth approach (∼0.14 au). We characterized the comet's chemical composition on four
L. Paganini +5 more
semanticscholar +1 more source
ChemMatters: Special Issue on NASA's EOS Aura Mission (Sept. 2002) [PDF]
, 2002 : This ChemMAtters issue features the human side of NASA’s Aura mission with five articles that include interviews with Aura scientists and engineers. ChemMatters is a quarterly publication of the American Chemical Society (ACS) geared to a high school ...
core
MONITORING OBSERVATIONS OF THE JUPITER-FAMILY COMET 17P/HOLMES DURING ITS 2014 PERIHELION PASSAGE [PDF]
, 2015 We performed a monitoring observation of a Jupiter-family comet, 17P/Holmes, during its 2014 perihelion passage to investigate its secular change in activity.
Yuna G. Kwon +17 more
semanticscholar +1 more source
Names are selected for NASA spaceflight projects and programs from various sources. Some have their foundations in mythology and astrology or legend and folklore.
Karegeannes, C. E. +2 more
core +5 more sources
Return to the Kuiper Belt: launch opportunities from 2025 to 2040 [PDF]
arXiv, 2018 Preliminary spacecraft trajectories for 45 Kuiper Belt Objects (KBOs) and Pluto suitable for launch between 2025 and 2040 are presented. These 46 objects comprise all objects with H magnitude < 4.0 or which have received a name from the International Astronomical Union as of May 2018.
arxiv
Elements of cost comparison for planetary missions with advanced propulsion [PDF]
Cost and performance comparisons are made between chemical propulsion and nuclear electric propulsion for planetary missions at Jupiter and beyond. Nuclear rocket comparisons are made for performance only.
Stearns, J. W.
core +1 more source
67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio
Science, 2015 The provenance of water and organic compounds on Earth and other terrestrial planets has been discussed for a long time without reaching a consensus.
K. Altwegg +34 more
semanticscholar +1 more source
A method of approximating propellant requirements of low-thrust trajectories [PDF]
Method of approximating propellant requirements of low thrust ...
Zola, C. L.
core +1 more source
, 2014 In the course of the selection of the scientific themes for the second and third L-class missions of the Cosmic Vision 2015-2025 program of the European Space Agency, the exploration of the ice giant planets Uranus and Neptune was defined "a timely ...
Adriani, Alberto +14 more
core +1 more source