Mars And Moon Site Analogs

Mars Western Hemisphere

Moon Near Side

3. Polar Dune Field 4. Polar Cap

Wind Deposits)

2, Viking Lander-1 Site (Rough, 8locky)

, Cratered Terrain (Regolith)

6. Vallis Marineris (Canyons)

2, Viking Lander-1 Site (Rough, 8locky)

.5, Channels . (Riverbed Deposits)

, Cratered Terrain (Regolith)

6. Vallis Marineris (Canyons)

3. Rima Bode 5. Rima Hadley 3. Sulpicius Gallus

6. Vallis Schröter!

5. Rilles Near Gambart

3. Rima Bode 5. Rima Hadley 3. Sulpicius Gallus

6. Vallis Schröter!

5. Rilles Near Gambart

6, Rima Hyginus

2. Tycho Crater 1. "Highlands" Site

Figure 6.13. From Thomas Stafford's Report to Congress: the comparison of representative lunar sites with representative Martian sites.

has no atmosphere, while Mars has a tenuous atmosphere that can generate massive seasonal dust storms, the key similarities are those associated with the surface features. The Moon has essentially no surface pressure; Mars has a surface pressure that is everywhere lower than 10 millibar. On Earth the pressure of 10 millibar corresponds to an altitude of 29,300 m (96,127 ft), so there is very little atmosphere on Mars. Humans require a full pressure suit over altitudes of 55,000 ft (16,764 m), so in that respect full pressure suits are required on both Mars and the Moon. On Mars the acceleration of gravity is 3.707m/s2 (12.162ft/ s2), on the Moon about half of that, that is 1.62m/s2 (5.309 ft/s2). On the Martian surface the temperature is approximately 218 kelvin (—67°F) (it depends on the season) and on the Moon approximately 215 kelvin (—73°F). With the surface conditions rather similar, this makes the Moon an excellent Mars evaluation site. With a lesser gravity it will be easier to move about on the Moon and assemble equipment and facilities, but the difference with Mars is not so large that operation of the hardware cannot be established fairly well. One of the uncertainties with Martian operations is that of the density variation of the atmosphere at the time of entry. As a result, the landing ellipses (the set of points of most probable landing location, or elliptical error probability) are quite large. If material is being pre-positioned, even if the same landing coordinates are selected, the landing sites could be 5 km (3.1 st. mi.) apart. So part of the Mars equipment evaluation will be the ability of the astronauts to locate and move the equipment to the same location. For a human mission to Mars that may be a truly critical element.

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Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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