If Jupiter has the Great Red Spot, which planet has the Great Dark Spot?
"that of Uranus, is primarily composed of ices and rock, which is why Uranus and Neptune are normally considered ""ice giants"" to emphasise this distinction. Traces of methane in the outermost regions in part account for the planet's blue appearance. In contrast to the hazy, relatively featureless atmosphere of Uranus, Neptune's atmosphere has active and visible weather patterns. For example, at the time of the ""Voyager 2"" flyby in 1989, the planet's southern hemisphere had a Great Dark Spot comparable to the Great Red Spot on Jupiter. These weather patterns are driven by the strongest sustained winds of any planet"
"Great Red Spot The Great Red Spot is a persistent high-pressure region in the atmosphere of Jupiter, producing an anticyclonic storm 22° south of the planet's equator. It has been continuously observed since 1830. Earlier observations from 1665 to 1713 are believed to be of the same storm; if this is correct, it has existed for at least ((2019 - 1665)/10 round 0) * 10 years. Such storms are not uncommon within the turbulent atmospheres of gas giants. The Great Red Spot may have existed since before 1665, but the present spot was first seen only after 1830 and well-studied"
"for at least 340 years. In the image at the left, the Great Red Spot can be seen near the top center. The Great Red Spot has turned dull pink, to bright red, but has not yet dissipated and is not likely to do so in the near future. Oval BA (or Red Spot Jr.) is a remnant formed from the merger of multiple white ovals. It is located just to the south of the Great Red Spot and has been increasing in strength. The Great Dark Spot is a feature observed near Jupiter's north pole in 2000 by the"
"Great Red Spot and also appears to be quasi-stable like the vortices in Earth's thermosphere. Interactions between charged particles generated from Io and the planet's strong magnetic field likely resulted in redistribution of heat flow, forming the Spot. Jupiter's magnetic field is fourteen times as strong as that of Earth, ranging from 4.2 gauss (0.42 mT) at the equator to 10–14 gauss (1.0–1.4 mT) at the poles, making it the strongest in the Solar System (except for sunspots). This field is thought to be generated by eddy currents—swirling movements of conducting materials—within the liquid metallic hydrogen core. The volcanoes on"
"Great White Spot The Great White Spot, also known as Great White Oval, on Saturn, named by analogy to Jupiter's Great Red Spot, are periodic storms that are large enough to be visible by telescope from Earth by their characteristic white appearance. The spots can be several thousands of kilometers wide. The ""Cassini"" orbiter was able to track the 2010-2011 instance of the storm, also known as the Northern Electrostatic Disturbance because of an increase in radio and plasma interference, or the Great Springtime Storm. Cassini data has revealed a loss of acetylene in the white clouds, an increase of"
"red. In April 2017, scientists reported the discovery of a ""Great Cold Spot"" in Jupiter's thermosphere at its north pole that is across, wide, and cooler than surrounding material. The feature was discovered by researchers at the Very Large Telescope in Chile, who then searched archived data from the NASA Infrared Telescope Facility between 1995 and 2000. They found that, while the Spot changes size, shape and intensity over the short term, it has maintained its general position in the atmosphere across more than 15 years of available data. Scientists believe the Spot is a giant vortex similar to the"
"had appeared farther to the north). NASA's ""Juno"" spacecraft flew over the Great Red Spot on July 11, 2017, taking several images of the Spot from about above the surface. The oval object rotates counter-clockwise, with a period of about six Earth days or fourteen Jovian days. Measuring 10,159 miles (16,350 kilometers) in width (as of April 3, 2017) Jupiter's Great Red Spot is 1.3 times as wide as Earth. The cloud-tops of this storm are about eight kilometres above the surrounding cloud-tops. Infrared data have long indicated that the Great Red Spot is colder (and thus, higher in altitude)"
"the Great Red Spot, Balem demands Earth in exchange for Jupiter's family. Realizing that Balem can ""harvest"" Earth only with her permission, Jupiter refuses. Caine infiltrates the refinery and damages its gravity hull, causing the refinery to begin collapsing. While the occupants evacuate the refinery, Tsing's ship moves in and rescues Jupiter's family. Jupiter survives the collapsing structures, only to land at the feet of Balem who tries to kill her; but she fights him off, and is rescued by Caine while Balem falls to his death. As the refinery is in its final stages of collapse, Tsing opens a"
"feature of Jupiter is the Great Red Spot, a persistent anticyclonic storm that is larger than Earth, located 22° south of the equator. It is known to have been in existence since at least 1831, and possibly since 1665. Images by the Hubble Space Telescope have shown as many as two ""red spots"" adjacent to the Great Red Spot. The storm is large enough to be visible through Earth-based telescopes with an aperture of 12 cm or larger. The oval object rotates counterclockwise, with a period of about six days. The maximum altitude of this storm is about above the"
"years, as opposed to the similarly sized Great Red Spot of Jupiter, which has persisted for centuries. Of all known giant planets in the Solar System, Neptune emits the most internal heat per unit of absorbed sunlight, a ratio of approximately 2.6. Saturn, the next-highest emitter, only has a ratio of about 1.8. Uranus emits the least heat, one-tenth as much as Neptune. It is suspected that this may be related to its extreme 98˚ axial tilt. This causes its seasonal patterns to be very different from those of any other planet in the Solar System. There are still no"
"as of 1997, during the preceding 50 years, the spot was darkest in the periods 1961–1966, 1968–1975, 1989–1990, and 1992–1993. There is no definitive theory as to what causes the formation or color of the Great Red Spot. Laboratory studies are examining the effects that cosmic rays or UV Light from the Sun have on the chemical composition of the clouds of Jupiter. One question is whether the Sun's radiation reacts with ammonium hydrosulfide in the planet's outer atmosphere to create the deep red color. Research has shown that the storm produces extreme amounts of heat because it simultaneously generates"
"of the Great Red Spot, near Jupiter's north pole. Infrared imagery revealed aspects of circulation near the poles, with bands of globe-encircling winds, and adjacent bands moving in opposite directions. The same announcement also discussed the nature of Jupiter's rings. Light scattering by particles in the rings showed the particles were irregularly shaped (rather than spherical) and likely originated as ejecta from micrometeorite impacts on Jupiter's moons, probably on Metis and Adrastea. On December 19, 2000, the ""Cassini"" spacecraft captured a very-low-resolution image of the moon Himalia, but it was too distant to show any surface details. The ""New Horizons"""
"used a new telescope to discover spots and colorful bands on Jupiter and observed that the planet appeared oblate; that is, flattened at the poles. He was also able to estimate the rotation period of the planet. In 1690 Cassini noticed that the atmosphere undergoes differential rotation. The Great Red Spot, a prominent oval-shaped feature in the southern hemisphere of Jupiter, may have been observed as early as 1664 by Robert Hooke and in 1665 by Cassini, although this is disputed. The pharmacist Heinrich Schwabe produced the earliest known drawing to show details of the Great Red Spot in 1831."
"on Jupiter, the South Tropical Little Red Spot (LRS) (nicknamed ""the Baby Red Spot"" by NASA), which was destroyed by the GRS. The new storm, previously a white spot in Hubble images, turned red in May 2008. The observations were led by Imke de Pater of the University of California, at Berkeley, US. The Baby Red Spot encountered the GRS in late June to early July 2008, and in the course of a collision, the smaller red spot was shredded into pieces. The remnants of the Baby Red Spot first orbited, then were later consumed by the GRS. The last"
"The Great Red Spot (GRS) is a persistent anticyclonic storm, 22° south of Jupiter's equator; observations from Earth establish a minimum storm lifetime of 350 years. A storm was described as a ""permanent spot"" by Gian Domenico Cassini after observing the feature in July 1665 with his instrument-maker Eustachio Divini. According to a report by Giovanni Battista Riccioli in 1635, Leander Bandtius, whom Riccioli identified as the Abbot of Dunisburgh who possessed an ""extraordinary telescope"", observed a large spot that he described as ""oval, equaling one seventh of Jupiter's diameter at its longest."" According to Riccioli, ""these features are seldom"
"later, and was not seen on later imaging passes. Several other cyclones were imaged in about the same area, like the March 2, 2001 cyclone, 19 January 2003 cyclone, 27 November 2004 cyclone (Dust devils have also been observed on Mars.) Snow was detected in the sky on Mars by Nasa's Phoenix Mars Lander, however, the snow vaporised before contacting the surface. The Great Red Spot on Jupiter is, by far, the largest extraterrestrial anticyclone (or cyclone) known. It is so large that about 2 to 3 Earths could fit inside it. The Great Red Spot has existed on Jupiter"
"the Great Red Spot of 9h 55m 42s. Despite this, the spot has 'lapped' the planet in System II at least 10 times since the early 19th century. Its drift rate has changed dramatically over the years and has been linked to the brightness of the South Equatorial Belt, and the presence or absence of a South Tropical Disturbance. It is not known exactly what causes the Great Red Spot's reddish color. Theories supported by laboratory experiments suppose that the color may be caused by complex organic molecules, red phosphorus, or yet another sulfur compound. The GRS varies greatly in"
"winter solstice, so historical data on the GWS is unavailable during this season, but the Cassini space probe has been able to observe the whole planet since it arrived shortly after the winter solstice in 2004. Great White Spot The Great White Spot, also known as Great White Oval, on Saturn, named by analogy to Jupiter's Great Red Spot, are periodic storms that are large enough to be visible by telescope from Earth by their characteristic white appearance. The spots can be several thousands of kilometers wide. The ""Cassini"" orbiter was able to track the 2010-2011 instance of the storm,"
"from extreme polar locations. Mars is at its brightest when it is in opposition, which occurs approximately every twenty-five months. Jupiter and Saturn are the largest of the five planets, but are farther from the Sun, and therefore receive less sunlight. Nonetheless, Jupiter is often the next brightest object in the sky after Venus. Saturn's luminosity is often enhanced by its rings, which reflect light to varying degrees, depending on their inclination to the ecliptic; however, the rings themselves are not visible to the naked eye from the Earth. Uranus and sometimes the asteroid Vesta are in principle visible to"
"close fly-by of Triton, the larger of Neptune's two originally known moons, passing within about 40,000 kilometers (25,000 mi). ""Voyager 2"" discovered previously unknown Neptunian rings, and confirmed six new moons: Despina, Galatea, Larissa, Proteus, Naiad and Thalassa. While in the neighborhood of Neptune, ""Voyager 2"" discovered the ""Great Dark Spot"", which has since disappeared, according to observations by the Hubble Space Telescope. The Great Dark Spot was later hypothesized to be a region of clear gas, forming a window in the planet's high-altitude methane cloud deck. With the decision of the International Astronomical Union to reclassify Pluto as a"
"in turbulence and storms along their interacting boundaries. A prominent result is the Great Red Spot, a giant storm that is known to have existed since at least the 17th century when it was first seen by telescope. Surrounding Jupiter is a faint planetary ring system and a powerful magnetosphere. Jupiter has 79 known moons, including the four large Galilean moons discovered by Galileo Galilei in 1610. Ganymede, the largest of these, has a diameter greater than that of the planet Mercury. Jupiter has been explored on several occasions by robotic spacecraft, most notably during the early ""Pioneer"" and ""Voyager"""
"able to be seen, and then only by a telescope of exceptional quality and magnification."" The Great Spot has been nearly continually observed since the 1870s, however. The GRS rotates counter-clockwise, with a period of about six Earth days or 14 Jovian days. Its dimensions are 24,000–40,000 km east-to-west and 12,000–14,000 km north-to-south. The spot is large enough to contain two or three planets the size of Earth. At the start of 2004, the Great Red Spot had approximately half the longitudinal extent it had a century ago, when it was 40,000 km in diameter. At the present rate of"
"Jupiter Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, but two-and-a-half times that of all the other planets in the Solar System combined. Jupiter and Saturn are gas giants; the other two giant planets, Uranus and Neptune, are ice giants. Jupiter has been known to astronomers since antiquity. It is named after the Roman god Jupiter. When viewed from Earth, Jupiter can reach an apparent magnitude of −2.94, bright enough for its reflected light to cast shadows, and making it"
"than most of the other clouds on the planet. However, recent infrared measurements of the upper atmosphere show far more heat above the Great Red Spot than the rest of the planet; ""acoustic waves"" rising from the storm have been proposed as an explanation for Jupiter's temperature. Careful tracking of atmospheric features revealed the spot's counter-clockwise circulation as far back as 1966, observations dramatically confirmed by the first time-lapse movies from the ""Voyager"" fly-bys. The spot is confined by a modest eastward jet stream to its south and a very strong westward one to its north. Though winds around the"
"Wesley discovered another impact event, smaller than the previous observed impacts. The 2010 impact was then discovered to have also been captured on video by amateur astronomer Christopher Go in the Philippines. 2009 Jupiter impact event The 2009 Jupiter impact event, occasionally referred to as the Wesley impact, was a July 2009 impact on Jupiter that caused a black spot in the planet's atmosphere. The impact area covered 190 million square kilometers, similar in area to the planet's Little Red Spot and approximately the size of the Pacific Ocean. The impactor is estimated to have been about 200 to 500"
"to Earth. Cyclonic storms are common on Jovian planets, such as the Small Dark Spot on Neptune. It is about one third the diameter of the Great Dark Spot and received the nickname ""Wizard's Eye"" because it looks like an eye. This appearance is caused by a white cloud in the middle of the Wizard's Eye. Mars has also exhibited cyclonic storms. Jovian storms like the Great Red Spot are usually mistakenly named as giant hurricanes or cyclonic storms. However, this is inaccurate, as the Great Red Spot is, in fact, the inverse phenomenon, an anticyclone. Cyclone In meteorology, a"
"larger, and Jupiter's is the strongest in the Solar System (so strong in fact that it poses a serious health risk to future manned missions to its moons). The magnetic fields of the other giant planets are roughly similar in strength to that of Earth, but their magnetic moments are significantly larger. The magnetic fields of Uranus and Neptune are strongly tilted relative the rotational axis and displaced from the centre of the planet. In 2004, a team of astronomers in Hawaii observed an extrasolar planet around the star HD 179949, which appeared to be creating a sunspot on the"
"usually show Jupiter's four Galilean moons and the prominent cloud belts across Jupiter's atmosphere. A large telescope will show Jupiter's Great Red Spot when it faces Earth. The planet Jupiter has been known since ancient times. It is visible to the naked eye in the night sky and can occasionally be seen in the daytime when the Sun is low. To the Babylonians, this object represented their god Marduk. They used Jupiter's roughly 12-year orbit along the ecliptic to define the constellations of their zodiac. The Romans called it ""the star of Jupiter"" (""Iuppiter Stella""), as they believed it to"
"on discovering that he will be abandoned yet again, so Chandra must convince HAL that the human crew is in danger. The ""Leonov"" crew flees Jupiter as a mysterious dark spot appears on Jupiter and begins to grow. HAL's telescope observations reveal that the ""Great Black Spot"" is, in fact, a vast population of monoliths, increasing at an exponential rate, which appear to be eating the planet. By acting as self-replicating machines, these monoliths increase Jupiter's density until the planet achieves nuclear fusion, becoming a small star. In the novel, this obliterates the primitive life forms inhabiting the Jovian atmosphere,"
"2009 Jupiter impact event The 2009 Jupiter impact event, occasionally referred to as the Wesley impact, was a July 2009 impact on Jupiter that caused a black spot in the planet's atmosphere. The impact area covered 190 million square kilometers, similar in area to the planet's Little Red Spot and approximately the size of the Pacific Ocean. The impactor is estimated to have been about 200 to 500 meters in diameter. (For comparison, the one for the Tunguska event was estimated to be in the 60–190 meters range.) Amateur astronomer Anthony Wesley discovered the impact at approximately 13:30 UTC on"
"candidate sites had little or no possibility of being the results of the proposed impacts. More recent discoveries include the following: Jupiter Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, but two-and-a-half times that of all the other planets in the Solar System combined. Jupiter and Saturn are gas giants; the other two giant planets, Uranus and Neptune, are ice giants. Jupiter has been known to astronomers since antiquity. It is named after the Roman god Jupiter. When viewed from"
"as Saturn and Jupiter, for example in the giant red spot vortex. In the atmosphere surrounding the giant red spot there is the biggest example of KHI that is known of and is caused by the shear force at the interface of the different layers of Jupiter's atmosphere. There have been many images captured where the ocean-wave like characteristics discussed earlier can be seen clearly, with as many as 4 shear layers visible. Weather satellites take advantage of this instability to measure wind speeds over large bodies of water. Waves are generated by the wind, which shears the water at"
"edge of the spot peak at ~120 metres per second (432 kilometres per hour), currents inside it seem stagnant, with little inflow or outflow. The rotation period of the spot has decreased with time, perhaps as a direct result of its steady reduction in size. The Great Red Spot's latitude has been stable for the duration of good observational records, typically varying by about a degree. Its longitude, however, is subject to constant variation. Because Jupiter does not rotate uniformly at all latitudes, astronomers have defined three different systems for defining the longitude. System II is used for latitudes of"