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• Conjunction
  ...the relative positions of an observer and a planet or an observer and two planets. The observer is, of course, usually looking from the surface of the [[Eart ==Two planets==
  1 KB (216 words) - 11:03, 5 August 2019
• Solar System
  ...r System consists of the terrestrial planets, the gas giants, moons, dwarf planets, asteroids, comets, and vast amounts of dust and debris. Also, Mars. ===Major Planets===
  5 KB (802 words) - 05:37, 27 March 2021
• Links and Resources
  ==The <s>Nine</s>8 Planets== * [http://www.nineplanets.org The <s>Nine</s>8 Planets] - Bill Arnett
  3 KB (354 words) - 13:41, 20 December 2018
• Origin of Mars and its Elemental Composition
  ...imal in about another 10,000 years. These bodies in turn accumulated into planets in another 10 to 100 million years in a process that mixed planetesimals fr ...un and since planetesimals from neighboring regions mixed in forming these planets, the elemental compositions of Mars and Earth should be similar. Analysis
  2 KB (313 words) - 18:14, 10 November 2020
• Geochemistry
  ...d composition in rocks and [[soil]] found on [[Earth]], [[Mars]] and other planets.
  282 bytes (37 words) - 16:34, 17 December 2018
• Speed of light
  ...22 minutes (between about 180 to 1340 seconds depending on the position of planets and resulting distance). For two way communication (request - answer) time ...planets, for a period of time sun will be positioned directly between both planets, blocking direct communications.
  2 KB (243 words) - 08:19, 27 October 2020
• Mercury
  ...Earht's 1350 w/m2 or Mars' 600 W/m2. Beamed power could be sent to other planets in the solar system from Mercury's surface, although this might better be a ...and material from the core might be more easily accessible than for other planets.
  2 KB (296 words) - 16:31, 17 February 2023
• Sun
  Eight planets are [[orbit|orbiting]] the sun, amoung them [[Mars]] and [[Earth]].
  707 bytes (111 words) - 20:53, 5 December 2019
• Asteroids
  '''Asteroids''', also known as ''minor planets'' or ''planetoids'', are significantly-sized debris that orbit the [[Sun]].
  990 bytes (149 words) - 15:30, 17 December 2018
• Orbit
  ...h around a bigger object, attracted by its [[gravity]]. [[Mars]] and other planets are orbiting the [[Sun]] in an elliptical trajectory. Mars is orbited by tw ...ansfer between two bodies. They are used to reduce transfer times between planets and other bodies. They require more powerful engines than low energy traje
  3 KB (436 words) - 07:46, 27 August 2021
• Motivation
  ...her planets, because the occurrence of such events at the same time on two planets is extremely unlikely. While the death of Mankind is hard, the collapse of ...ear of going away empty-handed while other nations occupy the Moon and the planets drives the government to support the effort.
  5 KB (808 words) - 16:03, 10 November 2022
• Goldilocks Zone
  Thus, human effort can warm planets (and possibly cool them), adjusting the size of the Goldilocks zone. "Worlds Beyond Our Own: The Search for Habitable Planets", by Susan Sengupta.
  4 KB (645 words) - 16:04, 25 July 2020
• Astrobiology
  ...t the extreme limits of life are on Earth and possibly on extraterrestrial planets or satellites. ...strobiology is to determine if it is possible for life to survive on other planets or satellites in our solar system and beyond. Astrobiology includes resea
  8 KB (1,161 words) - 11:22, 17 December 2018
• Internet
  ...ther issue as the Sun will be blocking the Line Of Sight (LOS) between the planets, communication signals will need to be re-routed via an [[Deep Space Networ
  6 KB (894 words) - 14:09, 6 November 2020
• SpaceX
  ...ace technology, with the ultimate goal of enabling people to live on other planets."
  2 KB (258 words) - 11:51, 31 August 2021
• Information Infrastructure
  ...might be required to communicate with vehicles in transit between the two planets.
  2 KB (242 words) - 10:40, 3 January 2020
• Solar wind
  ...ll often manifest itself as [[aurora|aurorae]] in the upper atmospheres of planets with magnetic fields. The ''solar wind'' is often associated with [[Coronal
  4 KB (616 words) - 16:26, 6 May 2021
• Spacecraft Classification
  ...planet’s gravity. The spacecraft’s orbit will be designed to pass close by planets but never orbit one, instead following a larger orbit around the sun. ...ll as survive very long periods in harsh conditions in the journey between planets.
  5 KB (853 words) - 10:19, 1 January 2023
• Cobalt
  ...]] that can be found in meteoritic iron. It is more common in the core of planets than in the crust. (Note that iron meteors, are the 'core' of large astero
  2 KB (295 words) - 15:00, 4 October 2022
• Columbus Crater
  ...fed paleolakes of Terra Sirenum, Mars. Journal of Geophysical Research E: Planets DOI: 10.1029/2010JE003694</ref> These were found using an orbiting near- ...fed paleolakes of Terra Sirenum, Mars. Journal of Geophysical Research E: Planets DOI: 10.1029/2010JE003694</ref>
  5 KB (693 words) - 10:14, 18 September 2021
• Exobiology
  Water, free oxygen and chlorophyll are all possible tracers for life on other planets that could be detected by astronomers.
  2 KB (360 words) - 08:51, 10 November 2019
• Mineral
  ...e bodies of liquid (usually water as its status as a universal solvent) on planets, such as lakes, rivers, or oceans, have often dissolved a great amount of s
  3 KB (404 words) - 20:23, 25 December 2019
• Geothermal energy
  ...cosmic bodies. It can be generated by the immense pressure in the core of planets and created by nuclear processes and is constantly available with virtually
  3 KB (439 words) - 04:36, 10 November 2022
• Tianwen-1
  ...m. Eastern. That was enough to permit the craft to be captured by the Red planets gravity. Tianwen-1 will gradually lower its orbit for better study of Mars.
  3 KB (384 words) - 07:50, 31 March 2022
• Transverse Aeolian ridges (TARs)
  ...Mars: Transverse Aeolian Ridges on Mars". Journal of Geophysical Research: Planets. 119 (12): 2583–2599. doi:10.1002/2014JE004633. </ref> <ref> Wilson, Sha ...ts of particulate materials 1. A review". Journal of Geophysical Research: Planets. 102 (E3): 6535–6549. Bibcode:1997JGR...102.6535P. doi:10.1029/96JE03302.
  8 KB (1,111 words) - 05:29, 10 September 2022
• Hohmann transfer
  ...from Planet Facts website: <nowiki>http://planetfacts.org/orbital-speed-of-planets-in-order/</nowiki></ref> and travel is far from instantaneous over such a v ...timing and positioning of the trajectory, a mission must wait for the two planets to reach the proper alignment before launching. Departing too soon or too l
  14 KB (2,097 words) - 10:36, 5 August 2019
• Gusev Crater
  ...m Gusev crater and calibration report | url = | journal = J. Geophys. Res. Planets | volume = 111 | issue = | page = }}</ref> ...f>Squyres, S., et al. 2006 Rocks of the Columbia Hills. J. Geophys. Res. Planets. 111</ref> Most importantly, all of the rocks in Columbia Hills show vario
  6 KB (917 words) - 19:04, 8 January 2020
• Why we need Mars to save humanity
  ...burst has to be directed in our direction. While they may affect several planets, Mars may not be affected if it were on the other side of the solar system. ...www.scientificamerican.com/article/wandering-in-the-void-billions-of-rogue-planets-without-a-home/</ref> They are not attached to a star. Instead they are j
  7 KB (993 words) - 00:51, 24 April 2021
• Gravitational parameter
  ...Sarzi-Amade - ''Physical and orbit properties of the sun, earth, moon, and planets'' in J.R. Wertz, D.F. Everett & J.J. Puschell eds. ''Space mission engineer
  2 KB (388 words) - 11:24, 17 December 2018
• Observing Mars with a Telescope
  ...ystem with surface features easily distinguishable from Earth—of the inner planets, Mercury’s small size and proximity to the Sun make viewing exceptionally ...elative positions of Earth and Mars at opposition and conjunction. The two planets reach opposition roughly once every 26 months.]]
  13 KB (2,038 words) - 12:05, 18 September 2019
• Atmospheric loss
  ...hese can exceed the escape velocity of the planet. Thus, smaller / warmer planets will lose these gases more quickly than larger / cooler ones. Gas giants h "Moons and Planets 5th Edition" by William K. Hartman, ISBN 0-534-49393-9
  7 KB (1,125 words) - 16:44, 3 December 2022
• MOC Public Targeting Program
  ...lanetary cruise through primary mission". Journal of Geophysical Research: Planets. 106 (E10): 23429–23570. Bibcode:2001JGR...10623429M. doi:10.1029/2000JE0
  3 KB (432 words) - 06:50, 27 December 2023
• Recycling
  ...ay of adding materials to the settlement. Importation from Earth or other planets is another.
  3 KB (495 words) - 09:21, 19 January 2021
• Mars Music
  ...mance in 1918.  According to Prof. Robert Greenberg, “Each movement in The Planets represents the embodiment of the titled astrological character and then pro
  8 KB (1,296 words) - 18:12, 10 November 2020
• Interplanetary commerce
  ...ticle, interplanetary commerce includes moons like [[Moon|Luna]] and dwarf planets like [[Ceres]]. Distances between the planets and Luna are always changing, requiring precise calculations for accurate t
  9 KB (1,398 words) - 14:52, 2 October 2020
• Regolith
  ...orites|meteoritic]] impact and erosion that forms the uppermost surface of planets, satellites and asteroids. It is a possible construction material in the fo
  4 KB (521 words) - 08:50, 4 November 2020
• Escape velocity
  ...Sarzi-Amade - ''Physical and orbit properties of the sun, earth, moon, and planets'' in J.R. Wertz, D.F. Everett & J.J. Puschell eds. ''Space mission engineer
  4 KB (588 words) - 07:53, 27 August 2021
• Super Greenhouse Gases
  ...(SGG) are hundreds or thousands of times more powerful than CO2 in warming planets, and are regulated on Earth for that reason. On Mars, which is too cold, l ...uld have a sub freezing temperature of -10 C. However, not all gases warm planets equally. Some such as oxygen (O2), and nitrogen (N2) are transparent to he
  12 KB (1,880 words) - 09:37, 23 July 2022
• Lagrangian point
  ...3)], Lagrangian points are currently used to describe the influence of the planets over local space, provides a location for [[asteroids|Trojan asteroids]] an
  5 KB (739 words) - 15:41, 17 December 2018
• Crew 186 - Boilers2Mars
  to the NASA Outer Planets Assessment Group (OPAG) and published in Advances in ...g plants at the molecular level and hopes to adapt plants to grow on other planets.
  8 KB (1,198 words) - 12:19, 24 March 2019
• Roads
  ...than on Earth. Kinetic energy from vehicle speed will be the same on both planets, however.
  4 KB (681 words) - 12:09, 6 October 2023
• Volcano
  Volcanos have been discovered on planets such as Venus, Earth, and Mars. Several moons also show signs of volcanism. Vulcanism is a major way that commercially exploitable ores form. Planets without volcanoes are more likely to undifferentiated 'junk' rocks, whereas
  9 KB (1,402 words) - 11:52, 5 January 2023
• Mars
  ...om/skychart2.aspx charts] show the current position of Mars (and the other planets) in the sky. More detailed and customized charts can be created with a plan ...s the most highly varied and interesting terrain of any of the terrestrial planets, some of it quite spectacular:
  11 KB (1,851 words) - 08:12, 27 May 2022
• Crew 176 - PolMars
  ...tian analogs ,and deals with issues of origin and presence of water on the planets of our Solar System. In 2005 she took part in the Mars Desert Research Stat
  4 KB (606 words) - 17:27, 16 March 2019
• Crew 167 Astronomy Reports
  Other visible planets as possible ...ls completely mastered at this point. Despite trying all three lenses, the planets I viewed were difficult to make out distinguishing features. I was able to
  11 KB (1,858 words) - 17:52, 7 March 2019
• People from Earth to Mars in 30 days
  ...between Mercury and Saturn,<ref>W. Joseph Armento, ''PHYSICAL DATA FOR THE PLANETS, THEIR SATELLITES AND SOME ASTEROIDS'' in the CRC HANDBOOK of CHEMISTRY an
  5 KB (833 words) - 14:01, 10 November 2020
• Doug turnbull
  ...details/lifeteachingsofg00turnrich,</ref> as well as "The Character Of The Planets" in ''Divine Language of Celestial Correspondences''. Coulson Turnbull was
  5 KB (770 words) - 16:10, 17 December 2018
• The Curious Case for Methane on Mars: Methane and Active Organics Discovered on Mars
  ...e discovered amino acids in comets and meteorites, which we know slam into planets, so it is common sense to see that whether Mars originally had organics or ...ications for methane variability on Mars. Journal of Geophysical Research: Planets, 129, e2023JE007841. https://doi.org/10.1029/2023JE007841
  11 KB (1,772 words) - 10:37, 2 May 2024
• Mars mission duration
  ...Earth. The eccentricity of the orbit of Mars is 0.0935 – second among the planets after Mercury. Launch windows to Mars opened approximately every 2.14 years
  5 KB (640 words) - 00:47, 3 March 2021
• Interplanetary communications
  ...would be required in a Mars or Earth leading orbit to transmit between the planets when the direct line of sight is blocked by the Sun.
  6 KB (976 words) - 11:36, 5 October 2022

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