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Giotto Mission
''Giotto'' was a European robotic spacecraft mission from the European Space Agency. The spacecraft flew by and studied Halley's Comet and in doing so became the first spacecraft to make close up observations of a comet. On 13 March 1986, the spacecraft succeeded in approaching Halley's nucleus at a distance of 596 kilometers. It was named after the Early Italian Renaissance painter Giotto di Bondone. He had observed Halley's Comet in 1301 and was inspired to depict it as the star of Bethlehem in his painting ''Adoration of the Magi'' in the Scrovegni Chapel. Mission Development Members of the ESA’s Solar System Working Group started investigating a mission to Halley’s comet in 1977 before rejecting it in August 1978 in favour of a lunar orbiter. Shortly afterwards this was reversed by the Science Advisory Committee and the ESA started to study a joint mission with NASA. This mission was to be the International Comet Mission consisting of a carrier NASA probe and smaller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet
A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or Coma (cometary), coma surrounding the nucleus, and sometimes a Comet tail, tail of gas and dust gas blown out from the coma. These phenomena are due to the effects of solar radiation and the outstreaming solar wind plasma acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently close and bright, a comet may be seen from Earth without the aid of a telescope and can Subtended angle, subtend an arc of up to 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robotic Spacecraft
Uncrewed spacecraft or robotic spacecraft are spacecraft without people on board. Uncrewed spacecraft may have varying levels of autonomy from human input, such as remote control, or remote guidance. They may also be autonomous, in which they have a pre-programmed list of operations that will be executed unless otherwise instructed. A robotic spacecraft for scientific measurements is often called a space probe or space observatory. Many space missions are more suited to telerobotic rather than crewed operation, due to lower cost and risk factors. In addition, some planetary destinations such as Venus or the vicinity of Jupiter are too hostile for human survival, given current technology. Outer planets such as Saturn, Uranus, and Neptune are too distant to reach with current crewed spaceflight technology, so telerobotic probes are the only way to explore them. Telerobotics also allows exploration of regions that are vulnerable to contamination by Earth micro-organisms s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariane 2
Ariane 2 was a European expendable space launch vehicle, operated by the European Space Agency (ESA) between 1986 and 1989 as part of Ariane family of rockets. The principal manufacturer for the Ariane 2 was Aérospatiale, while the lead agency for its development was the '' Centre National d'Etudes Spatiales'' (CNES), the French government's space agency.Harvey 2003, p. 515. Development of the Ariane 2 was authorised in July 1979, months prior to the Ariane 1's first flight. Drawing heavily upon both the design and infrastructure of the Ariane 1, the new launcher was concurrently developed alongside the Ariane 3, with which it shared much of its design. It represented an advancement of the Ariane 1 rather than a replacement, but was capable of lifting even heavier payloads into Geostationary transfer orbit (GTO). Developed largely within a two-year window, the Ariane 2 performed its maiden flight on 31 May 1986, actually flying after its Ariane 3 sibling. During its brief se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hipparcos
''Hipparcos'' was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions and distances of celestial objects on the sky. This permitted the first high-precision measurements of the intrinsic brightnesses, proper motions, and parallaxes of stars, enabling better calculations of their distance and tangential velocity. When combined with radial velocity measurements from spectroscopy, astrophysicists were able to finally measure all six quantities needed to determine the motion of stars. The resulting ''Hipparcos Catalogue'', a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision ''Tycho Catalogue'' of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. ''Hipparcos'' follow-up mission, '' Gaia'', was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetosphere
In astronomy and planetary science, a magnetosphere is a region of space surrounding an astronomical object in which charged particles are affected by that object's magnetic field. It is created by a celestial body with an active interior Dynamo theory, dynamo. In the space environment close to a planetary body with a dipole magnetic field such as Earth, the field lines resemble a simple magnetic dipole. Farther out, field lines can be significantly distorted by the flow of electrically conducting plasma (physics), plasma, as emitted from the Sun (i.e., the solar wind) or a nearby star. Planets having active magnetospheres, like the Earth, are capable of mitigating or blocking the effects of solar radiation or cosmic radiation. Interactions of particles and atmospheres with magnetospheres are studied under the specialized scientific subjects of plasma physics, space physics, and aeronomy. History Study of Earth's magnetosphere began in 1600, when William Gilbert (astronomer), W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giuseppe Colombo
Giuseppe "Bepi" Colombo (2 October 1920 in Padua – 20 February 1984 in Padua) was an Italians, Italian scientist, mathematician and engineer at the University of Padua, Italy. Mercury Colombo studied the planet Mercury (planet), Mercury, and it was his calculations which showed how to get a spacecraft into a solar orbit which would encounter Mercury multiple times, using a gravity assist manoeuvre with Venus. Due to this idea, NASA was able to have the Mariner 10 accomplish three fly-bys of Mercury instead of one. Mariner 10 was the first spacecraft to use gravity assist. Since then, the technique has become common. Colombo also explained the Tidal locking, spin-orbit Orbital resonance, resonance in Mercury's orbit, showing that it rotates three times for every two orbits around the Sun. Saturn's rings Colombo also made significant contributions to the study of Rings of Saturn, Saturn's rings, mostly using ground-based observations in the era before space exploration rea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
10P/Tempel
10P/Tempel, also known as Tempel 2, is a periodic Jupiter-family comet with a 5-year orbital period. It was discovered on July 4, 1873 by Wilhelm Tempel. At the perihelion passage on 2 August 2026 the solar elongation is calculated at 164 degrees, with apparent magnitude approximately 8, with closest approach to Earth on 3 August 2026 at a distance of . The comet nucleus is estimated to be roughly the size of Halley's Comet at 10.6 kilometers in diameter with a low albedo of 0.022. The nucleus is dark because hydrocarbons on the surface have been converted to a dark, tar like substance by solar ultraviolet radiation. The nucleus is large enough that even near aphelion (furthest distance from the Sun which is near the orbit of Jupiter) the comet remains brighter than about magnitude 21. During the 2010 apparition the comet brightened to about apparent magnitude 8. The most favorable apparition of 10P/Tempel 2 was in 1925 when it came within of Earth with an apparent magnitude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISEE-2
The ISEE-2 (International Sun-Earth Explorer-B or ISEE-B) was an Explorer-class daughter spacecraft, International Sun-Earth Explorer-2, was part of the mother/daughter/heliocentric mission (ISEE-1, ISEE-2, ISEE-3). ISEE-2 was a space probe used to study magnetic fields near the Earth. ISEE-2 was a spin-stabilized spacecraft and based on the design of the prior IMP ( Interplanetary Monitoring Platform) series of spacecraft. ISEE-1 and ISEE-2 were launched on 22 October 1977, and they re-entered on 26 September 1987. The program was a cooperative mission between NASA and ESRO (later European Space Agency (ESA)), a memorandum of understanding (MOU) between NASA and the European Space Agency, was signed in March 1975. The program was designed to study the interaction between the Earth's magnetic field and the solar wind. At least 32 institutions were involved, and the focus was on understanding magnetic fields. ISEE-1 and ISEE-3 were built by NASA, while ISEE-2 was built by ES ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Comet Mission
International is an adjective (also used as a noun) meaning "between nations". International may also refer to: Music Albums * ''International'' (Kevin Michael album), 2011 * ''International'' (New Order album), 2002 * ''International'' (The Three Degrees album), 1975 *''International'', 2018 album by L'Algérino Songs * The Internationale, the left-wing anthem * "International" (Chase & Status song), 2014 * "International", by Adventures in Stereo from ''Monomania'', 2000 * "International", by Brass Construction from ''Renegades'', 1984 * "International", by Thomas Leer from ''The Scale of Ten'', 1985 * "International", by Kevin Michael from ''International'' (Kevin Michael album), 2011 * "International", by McGuinness Flint from ''McGuinness Flint'', 1970 * "International", by Orchestral Manoeuvres in the Dark from '' Dazzle Ships'', 1983 * "International (Serious)", by Estelle from '' All of Me'', 2012 Politics * Internationalism (politics) * Political international, any ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giotto Halley Grigg-Skjellerup Orbit-multi-lang
Giotto di Bondone (; – January 8, 1337), known mononymously as Giotto, was an Italian painter and architect from Florence during the Late Middle Ages. He worked during the Gothic and Proto-Renaissance period. Giotto's contemporary, the banker and chronicler Giovanni Villani, wrote that Giotto was "the most sovereign master of painting in his time, who drew all his figures and their postures according to nature" and of his publicly recognized "talent and excellence".Bartlett, Kenneth R. (1992). ''The Civilization of the Italian Renaissance''. Toronto: D.C. Heath and Company. (Paperback). p. 37. Giorgio Vasari described Giotto as making a decisive break from the prevalent Byzantine style and as initiating "the great art of painting as we know it today, introducing the technique of drawing accurately from life, which had been neglected for more than two hundred years".Giorgio Vasari, ''Lives of the Artists'', trans. George Bull, Penguin Classics (1965), pp. 15–36. Giotto's m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scrovegni Chapel
The Scrovegni Chapel ( ), also known as the Arena Chapel, is a small church, adjacent to the Augustinian monastery, the ''Monastero degli Eremitani'' in Padua, region of Veneto, Italy. The chapel and monastery are now part of the complex of the Musei Civici di Padova. The chapel contains a fresco cycle by Giotto, completed around 1305 and an important masterpiece of Western art. In 2021, the chapel was declared part of the UNESCO World Heritage Site of 14th-century fresco cycles composed of 8 historical buildings in Padua city centre. The Scrovegni Chapel contains the most important frescoes that marked the beginning of a revolution in mural painting and influenced fresco technique, style, and content for a whole century. Description Giotto and his team covered all the internal surfaces of the chapel with frescoes, including the walls and the ceiling. The nave is 20.88 metres long, 8.41 metres wide, and 12.65 metres high. The apse area is composed of a square area (4.49 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star Of Bethlehem
The Star of Bethlehem, or Christmas Star, appears in the nativity of Jesus, nativity story of the Gospel of Matthew Matthew 2, chapter 2 where "wise men from the East" (biblical Magi, Magi) are inspired by the star to travel to Jerusalem. There, they meet King Herod the Great, Herod of Judea, and ask him: Herod calls together his scribes and priests who, quoting Micah 5#Verse 2, a verse from the Book of Micah, interpret it as a prophecy that the Messiah in Judaism, Jewish Messiah would be born in Bethlehem to the south of Jerusalem. Secretly intending to find and kill the Messiah in order to preserve his own kingship, Herod invites the wise men to return to him on their way home. The star leads them to Jesus' Bethlehem birthplace, where they worship him and give him gifts. The wise men are then given a divine warning not to return to Herod, so they return home by a different route. Many Christians believe the star was a miracle, miraculous sign. Some theologians claimed that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
