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April 1949 Lunar Eclipse
A total lunar eclipse A lunar eclipse occurs when the Moon moves into the Earth's shadow. Such alignment occurs during an eclipse season, approximately every six months, during the full moon phase, when the Moon's orbital plane is closest to the plane of the Earth ... took place on Wednesday, April 13, 1949, the first of two lunar eclipses in 1949. Visibility Related lunar eclipses Lunar year series See also * List of lunar eclipses * List of 20th-century lunar eclipses Notes External links * 1949-04 1949 in science Central total lunar eclipses {{lunar-eclipse-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Eclipse Chart Close-1949Apr13
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'' * Lunars, a fictional race in the series '' The Lunar Chronicles'' by Marissa Meyer Other uses * 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 See also * * * Lunar calendar, based upon the monthly cycles of the Moon's phase ** Lunar day, in such calendars ** Lunar month, in such calendars * Moon (other) The Moon is Earth's only natural satellite. Moon may also refer to: Celestial bodies * Natural satellite or Moon (generic) *Moon, a Chinese asterism corresponding to 37 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbra
The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object. Assuming no diffraction, for a collimated beam (such as a point source) of light, only the umbra is cast. These names are most often used for the shadows cast by celestial bodies, though they are sometimes used to describe levels, such as in sunspots. Umbra The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body. An observer within the umbra experiences a total eclipse. The umbra of a round body occluding a round light source forms a right circular cone. When viewed from the cone's apex, the two bodies appear the same size. The distance from the Moon to the apex of its umbra is roughly equal to that between the Moon and Earth: . Since Earth's diameter is 3.7 times the Moon's, its umbra extends correspondingly farther: roughly . Penumbra The pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saros Cycle
The saros () is a period of exactly 223 synodic months, approximately 6585.3211 days, or 18 years, 10, 11, or 12 days (depending on the number of leap years), and 8 hours, that can be used to predict eclipses of the Sun and Moon. One saros period after an eclipse, the Sun, Earth, and Moon return to approximately the same relative geometry, a near straight line, and a nearly identical eclipse will occur, in what is referred to as an eclipse cycle. A sar is one half of a saros. A series of eclipses that are separated by one saros is called a ''saros series''. It corresponds to: *6,585.321347 solar days *18.029 years *223 synodic months *241.999 draconic months *18.999 eclipse years (38 eclipse seasons) *238.992 anomalistic months The 19 eclipse years means that if there is a solar eclipse (or lunar eclipse), then after one saros a new moon will take place at the same node of the orbit of the Moon, and under these circumstances another eclipse can occur. History The earliest d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Saros 121
Saros cycle series 121 for lunar eclipses occurs at the moon's descending node. It began in 1029 and will end in 2526. It contains 84 member lunar eclipses, each separated by 18 years 11 and 1/3 days, and will last 1496.5 years. The series contains 29 total lunar eclipses between 1560 and 2021. It contains seven partial eclipses from 1398 to 1490 and seven more between 2039 and 2147. The last occurrence of this series was the last total lunar eclipse on May 26, 2021. The next occurrence on June 6, 2039 will be the first partial lunar eclipse, second set of partial lunar eclipses of this series. The longest totality occurred at series member 26, on October 18, 1660, lasting 102 minutes. This lunar saros is linked to Solar Saros 128. List See also * List of lunar eclipses There are several lists of lunar eclipses On the Moon, by the Earth ; Type * List of central lunar eclipses * Total penumbral lunar eclipse ; Classification * List of saros series for lunar eclipses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Eclipse
A lunar eclipse occurs when the Moon moves into the Earth's shadow. Such alignment occurs during an eclipse season, approximately every six months, during the full moon phase, when the Moon's orbital plane is closest to the plane of the Earth's orbit. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy) with Earth between the other two, which can happen only on the night of a full moon when the Moon is near either lunar node. The type and length of a lunar eclipse depend on the Moon's proximity to the lunar node. When the moon is totally eclipsed by the Earth, it takes on a reddish color that is caused by the planet when it completely blocks direct sunlight from reaching the Moon surface, as only the light reflected from the lunar surface has been refracted by Earth's atmosphere. This light appears reddish due to the Rayleigh scattering of blue light, the same reason sunrise and sunsets are more orange than during the day. Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Eclipse From Moon-1949Apr13
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'' * Lunars, a fictional race in the series '' The Lunar Chronicles'' by Marissa Meyer Other uses * 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 See also * * * Lunar calendar, based upon the monthly cycles of the Moon's phase ** Lunar day, in such calendars ** Lunar month, in such calendars * Moon (other) The Moon is Earth's only natural satellite. Moon may also refer to: Celestial bodies * Natural satellite or Moon (generic) *Moon, a Chinese asterism corresponding to 37 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lunar Eclipses
There are several lists of lunar eclipses On the Moon, by the Earth ; Type * List of central lunar eclipses * Total penumbral lunar eclipse ; Classification * List of saros series for lunar eclipses * Tetrad (astronomy) contains lists of tetrads in the late-20th and 21st centuries ; By era * Lunar eclipses by century * Historically significant lunar eclipses Historically significant lunar eclipses are eclipses of the Moon that are mentioned in historical accounts in connection with a significant event. Lunar eclipses are somewhat rare events, although not as rare as solar eclipses, because unlike sol ... On Earth, by the Moon {{DEFAULTSORT:Lunar eclipses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of 20th-century Lunar Eclipses
A total of 229 lunar eclipses took place in the 20th century: 83 penumbral, 65 partial and 81 total. See also: Lists of lunar eclipses, List of 19th-century lunar eclipses and List of 21st-century lunar eclipses List Eclipses from 2001 to 2002 are included on the end to complete the final set. References This list was compiled with data calculated by Fred Espenak of NASA's GSFC. {{DEFAULTSORT:20th-century lunar eclipses Lunar eclipses Lunar eclipses A lunar eclipse occurs when the Moon moves into the Earth's shadow. Such alignment occurs during an eclipse season, approximately every six months, during the full moon phase, when the Moon's orbital plane is closest to the plane of the Earth ... Lunar eclipses by time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1949 In Science
The year 1949 in science and technology involved some significant events, listed below. Astronomy and space exploration * June 14 – Albert II, a rhesus monkey, becomes the first mammal in space, in a U.S.-launched V-2 rocket, reaching an altitude of 83 miles (134 km) but dying on impact after a parachute failure. Chemistry * Radiocarbon dating technique discovered by Willard Libby and his colleagues at the University of Chicago—work for which Libby will receive the Nobel prize in 1960. * A group including Dorothy Hodgkin publish the three-dimensional molecular structure of penicillin, demonstrating that it contains a β-lactam ring. Computer science * April – Manchester Mark 1 computer operable at the University of Manchester in England. * May 6 – EDSAC, the first practicable stored-program computer, runs its first program at University of Cambridge in England, to calculate a table of squares. Earth sciences * August 5 – Ambato earthquake in Ecuador, measuring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
