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Peak Of Eternal Light
A peak of eternal light (PEL) is a hypothetical point on the surface of an astronomical body that is always in sunlight. Such a peak must have high latitude, high elevation, and be on a body with very small axial tilt. The existence of such peaks was first postulated by Beer and Mädler in 1837. The pair said about the lunar polar mountains: "...many of these peaks have (with the exception of eclipses caused by the Earth) eternal sunshine". These polar peaks were later mentioned by Camille Flammarion in 1879, who speculated that there may exist at the poles of the Moon. PELs would be advantageous for space exploration and space colonization, colonization due to the ability of an electrical device located there to receive solar power regardless of the time of day or day of the year, and the relatively stable temperature range. Detailed lunar topography collected by the Lunar Reconnaissance Orbiter (LRO) suggests that no points on the Moon receive perpetual light during both the wint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Body
An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical object, physical entity, association, or structure that exists within the observable universe. In astronomy, the terms ''object'' and ''body'' are often used interchangeably. However, an astronomical body or celestial body is a single, tightly bound, contiguous entity, while an astronomical or celestial ''object'' is a complex, less cohesively bound structure, which may consist of multiple bodies or even other objects with substructures. Examples of astronomical objects include planetary systems, star clusters, nebulae, and galaxy, galaxies, while asteroids, natural satellite, moons, planets, and stars are astronomical bodies. A comet may be identified as both a body and an object: It is a ''body'' when referring to the frozen Comet nucleus, nucleus of ice and dust, and an ''object'' when describing the entire comet with its diffuse Coma (cometary), coma and Comet tail, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spacecraft
A spacecraft is a vehicle that is designed spaceflight, to fly and operate in outer space. Spacecraft are used for a variety of purposes, including Telecommunications, communications, Earth observation satellite, Earth observation, Weather satellite, meteorology, navigation, space colonization, Planetary science, planetary exploration, and Space transport, transportation of Human spaceflight, humans and cargo spacecraft, cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket). On a sub-orbital spaceflight, a space vehicle enters space and then returns to the surface without having gained sufficient energy or velocity to make a full Geocentric orbit, Earth orbit. For orbital spaceflights, spacecraft enter closed orbits around the Earth or around other Astronomical object, celestial bodies. Spacecraft used for human spaceflight carry people on board as crew or passengers from start or on orbit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamics Of The Solar System
Dynamics (from Greek δυναμικός ''dynamikos'' "powerful", from δύναμις ''dynamis'' " power") or dynamic may refer to: Physics and engineering * Dynamics (mechanics), the study of forces and their effect on motion Brands and enterprises * Dynamic (record label), an Italian record label in Genoa Mathematics * Dynamical system, a concept describing a point's time dependency ** Topological dynamics, the study of dynamical systems from the viewpoint of general topology * Symbolic dynamics, a method to model dynamical systems Social science * Group dynamics, the study of social group processes especially * Population dynamics, in life sciences, the changes in the composition of a population * Psychodynamics, the study of psychological forces driving human behavior * Social dynamics, the ability of a society to react to changes * Spiral Dynamics, a social development theory Other uses * Dynamics (music), the softness or loudness of a sound or note * DTA Dynamic, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extraterrestrial Sky
In astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth. The only extraterrestrial sky that has been directly observed and photographed by astronauts is that of the Moon. The skies of Venus, Mars and Titan have been observed by space probes designed to land on the surface and transmit images back to Earth. Characteristics of extraterrestrial sky appear to vary substantially due to a number of factors. An extraterrestrial atmosphere, if present, has a large bearing on visible characteristics. The atmosphere's density and chemical composition can contribute to differences in color, opacity (including haze) and the presence of clouds. Astronomical objects may also be visible and can include natural satellites, planetary ring, rings, star systems and nebulas and other planetary system bodies. Luminosity and angular diameter of the Sun The Sun's apparent magnitude changes according to the inverse square law, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crater Of Eternal Darkness
A permanently shadowed crater is a depression on a body in the Solar System within which lies a point that is always in darkness. As of 2019, there are 324 known permanently shadowed regions on the Moon. Such regions also exist on Mercury (planet), Mercury and Ceres (dwarf planet), Ceres. Location Such a crater must be located at high latitude (close to a Poles of astronomical bodies, pole) and be on a body with very small axial tilt. The Moon has an axial tilt of about 1.5°; Mercury, 0.03°;Planetary Fact Sheets at http://nssdc.gsfc.nasa.gov and Ceres, about 4°. On the Moon, permanent shadow can exist at latitudes as low as 58°; approximately 50 permanently shadowed regions exist in the 58°- 65° latitude range for both lunar hemispheres. The cumulative area of permanently shad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jorge Mañes Rubio
Jorge is the Spanish and Portuguese form of the given name George. While spelled alike, this name is pronounced very differently in each of the two languages: Spanish ; Portuguese . It is derived from the Greek name Γεώργιος (''Georgios'') via Latin ''Georgius''; the former is derived from (''georgos''), meaning "farmer" or "earth-worker". The Latin form ''Georgius'' had been rarely given in Western Christendom since at least the 6th century. The popularity of the name however develops from around the 12th century, in Occitan in the form ''Jordi'', and it becomes popular at European courts after the publication of the ''Golden Legend'' in the 1260s. The West Iberian form ''Jorge'' is on record in Portugal as the name of Jorge de Lencastre, Duke of Coimbra (1481–1550). List of people with the given name Jorge * Jorge (footballer, born 1939), Brazilian footballer * Jorge (footballer, born 1946), Brazilian footballer * Jorge (Brazilian singer), Brazilian musician and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Habitation
Lunar habitation is any human habitation on the Moon. Lunar habitation is provided by surface habitats, possibly as part of a moonbase. History alt='' Eagle'', the first ever '' Eagle'', the first ever surface habitat and the first time people stayed on an extraterrestrial body, July 20, 1969 Lunar habitats have been designed for many different proposed moonbases. The only lunar habitats to have been erected thus far were the temporary Apollo Lunar Modules, such as ''Eagle'' of Tranquility Base, the very first. As of 2024, two programs, the US-led Artemis program and Chinese-led International Lunar Research Station aim to establish permanent surface settlements. Analysis Growth of plants in lunar regolith, in a laboratory with Apollo program regolith samples. Setting up structures on a natural body would provide ample sources of material for their construction, particularly for purposes such as shielding from cosmic radiation. The energy required to send objects fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shackleton Crater
Shackleton is an impact crater that lies at the lunar south pole. The peaks along the crater's rim are exposed to almost continual sunlight, while the interior is permanently shadowed crater, perpetually in shadow. The low-temperature interior of this crater functions as a cold trap that may capture and freeze Volatile (astrogeology), volatiles shed during comet impacts on the Moon. Measurements by the ''Lunar Prospector'' spacecraft showed higher than normal amounts of hydrogen within the crater, which may indicate the presence of water ice. The crater is named after Antarctic explorer Ernest Shackleton. Description The rotational axis of the Moon passes through Shackleton, near the rim. The crater is in diameter and deep. From the Earth, it is viewed edge-on in a region of rough, cratered terrain. It is located within the South Pole–Aitken basin on a massif. The rim is slightly raised about the surrounding surface and it has an outer rampart that has been only lightly imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malapert (crater)
Malapert is a Lunar craters, lunar impact crater that lies near the south pole of the Moon, named for 17th century astronomer Charles Malapert. From the Earth this formation is viewed from the side, limiting the amount of detail that can be seen. The crater is also illuminated at very low angles, so that parts of the interior remain in almost crater of eternal darkness, constant darkness. The nearest craters of note are Cabeus (crater), Cabeus to the west, and Shoemaker (lunar crater), Shoemaker to the south-southeast and nearer to the south pole of the Moon. The rim of Malapert forms an irregular ring of peaks around the interior floor. The western side of the rim is overlain by what appear to be impact craters. There are also small craters overlying the southeastern rim. Much of the interior and details of the rim remain hidden by shadows. The southwestern part of the rim forms part of a 5-km-high rise in the surface that has been unofficially designated Malapert Mountain. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Southern Pole Peaks Of Eternal Light
Lunar most commonly means "of or relating to the Moon". Lunar may also refer to: Arts and entertainment * ''Lunar'' (series), a series of video games * "Lunar" (song), by David Guetta * "Lunar", a song by Priestess from the 2009 album ''Prior to the Fire'' * Lunar Drive-in Theatre, in Dandenong, Victoria, Australia * Lunars, a fictional race in the series ''The Lunar Chronicles'' by Marissa Meyer Other uses * Lunar dynasty, a legendary house of warrior–rulers in ancient Indian texts * Lunar Magic, Super Mario World level editor * Lunar Design, or LUNAR, a San Francisco-based design consultancy * Hasselblad Lunar, a digital camera * Lunar, a brandname of Ethinylestradiol/cyproterone acetate, a birth control pill * Lunar C (Jake Brook, born 1990), English rapper * LUNAR (software) (1970–1972), question-answering system by Bill Woods (computer scientist) See also * * * Lunar calendar, based upon the monthly cycles of the Moon's phase ** Lunar day, in such calendars ** Lunar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peary (crater)
Peary is the closest large lunar impact crater to the lunar north pole. At this latitude the crater interior receives little sunlight, and portions of the southernmost region of the crater floor remain permanently cloaked in shadow. From the Earth the crater appears on the northern lunar limb, and is seen from the side. Observation and etymology Since Peary is located nearly on the limb of the Moon as viewed from Earth, high-quality images of the crater were not available until space probes started photographing the Moon; the first high-quality images came from the US Lunar Orbiter 4 spacecraft. Since it is located nearly at the lunar north pole, it was named after the polar explorer Robert Peary. Physical features Peary is nearly circular, with an outward bulge along the northeast rim. There is a gap in the southwestern rim, where it joins the slightly smaller crater Florey. The outer rim of Peary is worn and eroded, creating a rugged mountainous ring that produces long s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
