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Solar Eclipse Of March 7, 1989
A partial solar eclipse occurred on March 7, 1989. A solar eclipse occurs when the Moon passes between Earth and the Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared rad ..., thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. Related eclipses Eclipses of 1989 * A total lunar eclipse on February 20. * A partial solar eclipse on March 7. * A total lunar eclipse on August 17. * A partial solar eclipse on August 31. Solar eclipses of 1986–1989 Metonic series References External links 1989 3 7 1989 in science 1989 3 7 March 1989 events {{Solar-eclipse-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Eclipse
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of the Earth, totally or partially. Such an alignment occurs during an eclipse season, approximately every six months, during the new moon phase, when the Moon's orbital plane is closest to the plane of the Earth's orbit. In a total eclipse, the disk of the Sun is fully obscured by the Moon. In partial and annular eclipses, only part of the Sun is obscured. Unlike a lunar eclipse, which may be viewed from anywhere on the night side of Earth, a solar eclipse can only be viewed from a relatively small area of the world. As such, although total solar eclipses occur somewhere on Earth every 18 months on average, they recur at any given place only once every 360 to 410 years. If the Moon were in a perfectly circular orbit and in the same orbital plane as Earth, there would be total solar eclipses once a month, at every new moon. Instead, because the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surface is made up of the ocean, dwarfing Earth's polar ice, lakes, and rivers. The remaining 29% of Earth's surface is land, consisting of continents and islands. Earth's surface layer is formed of several slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's liquid outer core generates the magnetic field that shapes the magnetosphere of the Earth, deflecting destructive solar winds. The atmosphere of the Earth consists mostly of nitrogen and oxygen. Greenhouse gases in the atmosphere like carbon dioxide (CO2) trap a part of the energy from the Sun close to the surface. Water vapor is widely present in the atmosphere and forms clouds that cover most of the planet. More sola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
February 1989 Lunar Eclipse
A total lunar eclipse took place on Monday, February 20, 1989, the first of two total lunar eclipses in 1989. Visibility It was completely visible from Australia and most of Asia. It was visible setting in eastern Africa and Europe. In the Philippines, the lunar eclipse was very visible throughout the country since the modern lunar eclipse happened on July 26, 1953. It was also preceded by the twin total lunar eclipses on April 24, 1986 and October 17, 1986. The next one happened on February 9, 1990. Relation to other lunar eclipses Eclipses of 1989 * A total lunar eclipse on February 20. * A partial solar eclipse on March 7. * A total lunar eclipse on August 17. * A partial solar eclipse on August 31. Lunar year series (354 days) Tritos series Saros series (18 years 11 days) It last occurred on February 10, 1971 and will next occur on March 3, 2007. Metonic cycle (19 years) This is the third of five Metonic lunar eclipses. Saros series It las ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August 1989 Lunar Eclipse
A total lunar eclipse took place at 0308 UT (GMT) on Thursday, August 17, 1989, the second of two total lunar eclipses in 1989. The moon passed through the center of the Earth's shadow. Visibility It was seen completely over South America, and rising over North America, and setting over Africa, and Europe. : Relations to other lunar eclipses Eclipses of 1989 * A total lunar eclipse on February 20. * A partial solar eclipse on March 7. * A total lunar eclipse on August 17. * A partial solar eclipse on August 31. Lunar year series This eclipse is the second of four lunar year eclipses occurring at the moon's ascending node. The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events. Saros series Lunar Saros 128 contains 15 total lunar eclipses between 1845 and 2097 (in years 1845, 1863, 1881, 1899, 1917, 1935, 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Eclipse Of August 31, 1989
A partial solar eclipse occurred on August 31, 1989. A solar eclipse A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of the Earth, totally or partially. Such an alignment occurs during an eclipse season, approximately every six month ... occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. Related eclipses Eclipses of 1989 * A total lunar eclipse on February 20. * A partial solar eclipse on March 7. * A total lunar eclipse on August 17. * A partial solar eclipse on August 31. Solar eclipses of 1986–1989 Metonic series References External links 1989 8 31 1989 in science 1989 8 31 August 1989 events {{Solar-eclipse-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partial Solar Eclipses
Partial may refer to: Mathematics *Partial derivative, derivative with respect to one of several variables of a function, with the other variables held constant ** ∂, a symbol that can denote a partial derivative, sometimes pronounced "partial dee" **Partial differential equation, a differential equation that contains unknown multivariable functions and their partial derivatives Other uses *Partial application, in computer science the process of fixing a number of arguments to a function, producing another function *Partial charge or net atomic charge, in chemistry a charge value that is not an integer or whole number *Partial fingerprint, impression of human fingers used in criminology or forensic science *Partial seizure or focal seizure, a seizure that initially affects only one hemisphere of the brain * Partial or Part score, in contract bridge a trick score less than 100, as well as other meanings * Partial or Partial wave, one sound wave of which a complex tone is composed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1989 In Science
The year 1989 in science and technology involved many significant events, some listed below. Astronomy * August – Asteroid 4769 Castalia is the first asteroid directly imaged, by radar from Arecibo. * August 25 – The ''Voyager 2'' spacecraft makes its closest approach to Neptune, providing definitive proof of the planet's rings. * September 5 – Pluto–Charon barycentre comes to perihelion. * Asteroid 5128 Wakabayashi is discovered by Masahiro Koishikawa. *4292 Aoba is discovered. * 4871 Riverside is discovered. *6089 Izumi is discovered. *6190 Rennes is discovered *8084 Dallas is discovered. Biology * Discovery of the cystic fibrosis trans-membrane conductance regulator gene. * The New Zealand Department of Conservation begins to implement a Kakapo Recovery Plan. Computer science * March 12 - Tim Berners-Lee submits a memorandum, titled "Information Management: A Proposal", to the management at CERN for a system that would eventually become the World Wide Web. * June ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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