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The Solar System Portal

TheSun and planets of the Solar System(distances not to scale)

TheSolar System consists of theSun and the objects thatorbit it. The name comes fromSōl, the Latin name for the Sun. Itformed about 4.6 billion years ago when a dense region of amolecular cloud collapsed, creating the Sun and aprotoplanetary disc from which the orbiting bodies assembled. Thefusion of hydrogen into helium inside theSun's core releases energy, which is primarily emitted through its outerphotosphere. This creates a decreasing temperaturegradient across the system. Over 99.86% of the Solar System's mass is located within the Sun.

Themost massive objects that orbit the Sun are the eightplanets. Closest to the Sun in order of increasing distance are the fourterrestrial planets –Mercury,Venus,Earth andMars. These are the planets of theinner Solar System. Earth and Mars are the only planets in the Solar System which orbit within the Sun'shabitable zone, where liquid water can exist on the surface. Beyond thefrost line at about fiveastronomical units (AU), are twogas giants –Jupiter andSaturn – and twoice giants –Uranus andNeptune. These are the planets of theouter Solar System. Jupiter and Saturn possess nearly 90% of the non-stellar mass of the Solar System.

There are a vast number of less massive objects. There is a strong consensus among astronomers that the Solar System has at least ninedwarf planets:Ceres,Orcus,Pluto,Haumea,Quaoar,Makemake,Gonggong,Eris, andSedna. Six planets, seven dwarf planets, and other bodies have orbitingnatural satellites, which are commonly called 'moons', and range fromsizes of dwarf planets, like Earth'sMoon, at their largest, to much less massivemoonlets at their smallest. There aresmall Solar System bodies, such asasteroids,comets,centaurs,meteoroids, andinterplanetary dust clouds. Some of these bodies are in theasteroid belt (between Mars's and Jupiter's orbit) and theKuiper belt (just outside Neptune's orbit).

Between the bodies of the Solar System is aninterplanetary medium of dust and particles. The Solar System is constantly flooded by outflowingcharged particles from thesolar wind, forming theheliosphere. At around70–90 AU from the Sun, the solar wind is halted by theinterstellar medium, resulting in theheliopause. This is the boundary tointerstellar space. Further out somewhere beyond2,000 AU from the Sun extends the outermost region of the Solar System, the theorizedOort cloud, the source forlong-period comets, stretching to the edge of the Solar System, the edge of itsHill sphere, at 178,000–227,000 AU (2.81–3.59 ly), where its gravitational potential becomes equal to the galactic potential. The Solar System currently moves through a cloud of interstellar medium called theLocal Cloud. Theclosest star to the Solar System,Proxima Centauri, is 269,000 AU (4.25 ly) away. Both are within theLocal Bubble, a relatively small 1,000 light-years (ly) wide region of theMilky Way. (Full article...)

Outline of the Solar System

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An artist's rendering of the Oort cloud, the Hills cloud, and the Kuiper belt.

TheOort cloud (pronounced/ɔːrt/ORT or/ʊərt/OORT), sometimes called theÖpik–Oort cloud, istheorized to be a cloud of billions oficy planetesimals surrounding theSun at distances ranging from 2,000 to 200,000AU (0.03 to 3.2light-years). The cloud was proposed in 1950 by the Dutchastronomer Jan Oort, in whose honor the idea was named. Oort proposed that the bodies in this cloud replenish and keep constant the number oflong-period comets entering theinner Solar System—where they are eventually consumed and destroyed during close approaches to the Sun.

The cloud is thought to encompass two regions: adisc-shaped inner Oort cloud aligned with thesolar ecliptic (also called itsHills cloud) and aspherical outer Oort cloud enclosing the entireSolar System. Both regions lie well beyond theheliosphere and are ininterstellar space. The innermost portion of the Oort cloud is more than a thousand times farther from the Sun than theKuiper belt, thescattered disc and thedetached objects—three nearer reservoirs oftrans-Neptunian objects. (Full article...)

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Image 1
Climate of Mars
Photograph credit:NASA /JPL–Caltech /University of Arizona
AlthoughMars is smaller than the Earth and 50 percent farther from the Sun,its climate has important similarities with the Earth, such as the presence ofpolar ice caps, seasonal changes and observable weather patterns. This image shows layered deposits inPlanum Boreum, in the north polar region of Mars, which formed from a 3-kilometre-thick (2 mi) stack of dusty water-ice layers about 1,000 km (600 mi) across. The layers record information about the climate of the planet stretching back several million years. Erosion has created scarps and troughs that expose the layering. The tan-colored layers are the dusty water ice of the polar layered deposits, however a section of bluish layers is visible below them. These bluish layers contain sand-sized rock fragments that likely formed a large polar dunefield before the overlying dusty ice was deposited. This photograph, depicting an area approximately 1.3 km (0.8 mi) across, was captured by theHiRISE camera on boardNASA'sMars Reconnaissance Orbiter.
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Image 2
Europa (moon)
Photo credit:NASA/JPL
Realistic-color mosaic of images ofJupiter's moonEuropa taken by NASA's Jupiter orbiterGalileo in 1995 and 1998. This view of the moon'santi-Jovian hemisphere shows numerouslineae, linear features created via atectonic process in which crustal plates of water ice floating on asubsurface ocean (kept warm bytidal flexing) shift in relative position. Reddish regions are areas where the ice has a higher mineral content. The north polar region is at right. (Geologic features are annotated inCommons.)
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Image 3
Pale Blue Dot
Photo credit:NASA/JPL
Pale Blue Dot is the name given to this 1990 photo ofEarth taken fromVoyager 1 when its vantage point reached the edge of theSolar System, a distance of roughly 3.7 billion miles (6 billion kilometres). Earth can be seen as a blueish-white speck approximately halfway down the brown band to the right. The light band over Earth is an artifact of sunlightscattering in the camera'slens, resulting from the small angle between Earth and theSun.Carl Sagan came up with the idea of turning the spacecraft around to take a composite image of the Solar System. Six years later, he reflected, "All of human history has happened on that tiny pixel, which is our only home."
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Image 4
Lunar phase
Image:Tom Ruen
Ananimation of thephases of the Moon. As the Moon revolves around theEarth, theSun lights the Moon from a different side, creating the different phases. In the image, the Moon appears to get bigger as well as "wobble" slightly.Tidal locking synchronizes the Moon'srotation period on its axis to match itsorbital period around the earth. These two periods nearly cancel each other out, except that the Moon's orbit iselliptical. This causes its orbital motion to speed up whencloser to the Earth, and slow down when farther away, causing the Moon'sapparent diameter to change, as well as the wobbling motion observed.
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Image 5
C/2014 Q2 (Lovejoy)
Photograph: John Vermette
C/2014 Q2 (Lovejoy) is a long-periodcomet discovered in 2014 by Australian astronomerTerry Lovejoy using a 0.2-meter (8 in)Schmidt–Cassegrain telescope. It was discovered atapparent magnitude 15 in the southern constellation ofPuppis, and is the fifth comet discovered by Lovejoy. Its blue-green glow is the result of organic molecules and water released by the comet fluorescing under the harsh UV and optical light of the sun as it passes through space.
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Image 6
The Blue Marble
Photo credit:TheApollo 17 crew
The Blue Marble is a famous photograph ofEarth.NASA officially credits the image to the entireApollo 17 crew —Eugene Cernan,Ronald Evans andJack Schmitt — all of whom took photographic images during the mission.Apollo 17 passed overAfrica during daylight hours andAntarctica is also illuminated. The photograph was taken approximately five hours after the spacecraft's launch, whileen route to theMoon.Apollo 17, notably, was the last manned lunar mission; nohumans since have been at a range where taking a "whole-Earth" photograph such as "The Blue Marble" would be possible.
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Image 7
Iapetus
Photo credit:Cassini orbiter
A close-up of 10 km (6.2 mi) high mountains within theequatorial ridge onSaturn's moonIapetus, photographed by theCassini orbiter. Above the middle of the image can be seen a place where an impact has exposed the brightice beneath the dark overlying material. The image was taken on September 10, 2007, with theCassini spacecraft narrow-angle camera at a distance of approximately 3,870 km (2,400 mi) from Iapetus.
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Image 8
Sun
Photograph credit:NASA/SDO
TheSun is thestar at the center of theSolar System. It is a nearly perfect sphere ofplasma, heated bynuclear fusion ofhydrogen intohelium in itscore, with internalconvective motion that generates amagnetic field viaa dynamo process. It is by far the most important source of energy for life on Earth. Its diameter is about 1.39 million kilometres (860,000 miles) or 109 times that of Earth, while its mass is about 330,000 times that of Earth. It accounts for about 99.86% of the total mass of the Solar System. Roughly three-quarters of the Sun's mass consists of hydrogen; the rest is mostly helium, with much smaller quantities of heavier elements, includingoxygen,carbon,neon andiron.

Thisfalse-color photograph of the Sun was taken by the Atmospheric Imaging Assembly instrument onNASA'sSolar Dynamics Observatory (SDO) at a wavelength of 304 angstroms, in theextreme ultraviolet region of theelectromagnetic spectrum.
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Image 9
Husband Hill
Photo credit:Spirit rover
A 360°panorama taken during the descent from the summit ofHusband Hill, one of theColumbia Hills inGusev crater,Mars. Thisstitched image is composed of 405 individual images taken with five different filters on the panoramic camera over the course of five Martian days.
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Image 10
Jupiter
Jupiter
Credit: Cassini probe
Jupiter is the fifthplanet from the Sun and by far thelargest within theSolar System. It is 318 times more massive than Earth, with adiameter 11 times that of Earth, and with avolume 1300 times that of Earth. Its best known feature is theGreat Red Spot, astorm larger than Earth, which was first observed byGalileo four centuries ago. This picture, taken by theCassini orbiter was one of 26 thousand images taken of Jupiter during the course of its flyby and is the most detailed global color portrait of the planet ever produced.
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Image 11
Five global views ofVenus byMagellan.
Magellan (spacecraft)
Credit: NASA/Jet Propulsion Laboratory
These images are composites of the complete radar image collection obtained by theMagellan mission. TheMagellan spacecraft was launched aboardSpace ShuttleAtlantis in May 1989 and began mapping the surface ofVenus in September 1990. The spacecraft continued to orbitVenus for four years, returning high-resolution images, altimetry, thermal emissions and gravity maps of 98 percent of the surface.Magellan spacecraft operations ended on October 12, 1994, when the radio contact was lost with the spacecraft during its controlled descent into the deeper portions of theVenusian atmosphere.
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Image 12
Moons of the Solar System
Image credit:NASA,Deuar,TotoBaggins,KFP
Anatural satellite is an object thatorbits aplanet or other body larger than itself and which is not man-made. Such objects are often calledmoons. Shown here are 28 of the 240 moons of theSolar System, including those of thedwarf planets Pluto andEris as well as that ofasteroid 243 Ida. TheEarth is included for scale.
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Image 13
Uranus
Photo:NASA/JPL/Voyager 2 mission
Uranus is the seventh planet from theSun and the fourth most massive in theSolar System. In this photograph from 1986 the planet appears almost featureless, but recent terrestrial observations have found seasonal changes to be occurring.
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Image 14
Solar flare
Photo:Goddard Space Flight Center
Asolar flare, a sudden flash of brightness observed over theSun's surface or the solar limb which is interpreted as a large energy release, recorded on August 31, 2012. Such flares are often, but not always, followed by a colossalcoronal mass ejection; in this instance, the ejection traveled at over 900 miles (1,400 km) per second.
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Image 15
Comet Hale-Bopp 29-03-1997
Comet Hale–Bopp
Credit: Philipp Salzgeber
Comet Hale–Bopp sails across the sky in the vicinity ofPazin inIstria,Croatia. To the lower right of the comet theAndromeda Galaxy is also faintly visible. Thecomet was visible to the naked eye for a record 18 months, twice as long as theGreat Comet of 1811. Atperihelion, it shone brighter than any star in the sky exceptSirius, and its two tails stretched 30-40 degrees across the sky. The passage of Hale-Bopp was notable also for inciting a degree of panic about comets not seen for decades. Rumours that the comet was being followed by analien spacecraft inspired a mass suicide among followers of theHeaven's Gate cult.
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Image 16
Io
Photo:NASA
A true-color image ofIo, one of the moons ofJupiter, taken by theGalileo spacecraft. The dark spot just left of the center is the erupting volcanoPrometheus. The whitish plains on either side of it are coated with volcanically depositedsulfur dioxide frost, whereas the yellower regions contain a higher proportion ofsulfur.
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Image 17
Tranquility Base
Photograph credit:Neil Armstrong
Tranquility Base is the landing site of theApollo 11 mission on theMoon where, on July 20, 1969, humans first landed and walked on a celestial body other than the Earth. This photograph was taken at Tranquility Base byNeil Armstrong, the Apollo 11 commander, and depicts crewmemberBuzz Aldrin with scientific equipment he had just deployed on the lunar surface. In the background on the right of the image is thelunar module,Eagle; the United States flag planted at the site during the mission was blown over the next day by the exhaust of the ascent rocket.
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Image 18
Milky Way
Photograph credit:ESO / Stéphane Guisard
TheMilky Way is thegalaxy that contains theSolar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. The term Milky Way is a translation of the Latinvia lactea, from the Greekγαλαξίας κύκλος (galaxías kýklos, 'milky circle'). From Earth, the Milky Way appears as a band because its disk-shaped structure is viewed from within.Galileo Galilei first resolved the band of light into individual stars with his telescope in 1610. Until the early 1920s, most astronomers thought that the Milky Way contained all the stars in theUniverse. Following the 1920Great Debate between the astronomersHarlow Shapley andHeber Curtis, observations byEdwin Hubble showed that the Milky Way is just one of many galaxies.

This picture shows a portion of the Milky Way as seen fromCerro Paranal in Chile, home to theEuropean Southern Observatory (ESO)'sVery Large Telescope, depicting the region spanning the constellations fromSagittarius toScorpius. The colourfulnebulae surroundingRho Ophiuchi andAntares can be seen to the right, while the dusty lane of the galaxy runs obliquely through the image, dotted with reddish objects such as theLagoon andTrifid Nebulae. This region of the Milky Way also includes theGalactic Center, likely containing asupermassive black hole,Sagittarius A*.
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Image 19
Sunspot TRACE image
Sunspot
Credit: NASA/TRACE
ATRACE image ofsunspots on the surface, orphotosphere, of theSun from September2002, is taken in the farultraviolet on a relatively quiet day for solar activity. However, the image still shows a large sunspot group visible as a bright area near the horizon. Although sunspots are relatively cool regions on the surface of the Sun, the bright glowing gas flowing around the sunspots have a temperature of over one million °C (1.8 million °F). The hightemperatures are thought to be related to the rapidly changingmagnetic field loops that channel solarplasma.
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Image 20
Mars
Mars
Credit: NASA
Mars, the fourthplanet from theSun, is named after theRoman god of war because of its bloodred color. Mars has two small, oddly-shaped moons,Phobos andDeimos, named after the sons of theGreek godAres. At some point in the future Phobos will be broken up bygravitational forces. The atmosphere on Mars is 95%carbon dioxide. In 2003methane was also discovered in the atmosphere. Since methane is an unstable gas, this indicates that there must be (or have been within the last few hundred years) a source of thegas on the planet.
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Image 21
Solar eclipse of 11 August 1999
Solar eclipse of 1999 August 11
Credit: Luc Viatour
Thesolar eclipse of 1999 August 11, as seen from France. This was the most viewedtotal eclipse in human history, although some areas offered impaired visibility due to adverse weather conditions. The path of theMoon's shadow began in theAtlantic Ocean, before traversingCornwall, northernFrance, southernGermany,Austria,Hungary and northernSerbia. Its maximum was inRomania, and it continued across theBlack Sea,Turkey,Iran, southernPakistan andIndia.
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Image 22
Earthrise, as seen by Apollo 8
Apollo 8
Credit: William Anders
Earthrise, the first occasion in which humans saw theEarth seemingly rising above the surface of theMoon, taken during theApollo 8 mission on December 24, 1968. This view was seen by the crew at the beginning of its fourthorbit around the Moon, although thefirst photograph taken was in black-and-white. Note that the Earth is in shadow here. A photo of afully lit Earth would not be taken until theApollo 17 mission.
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Image 23
Saturn
Photo credit:Cassini orbiter
Saturneclipsing theSun, as seen by theCassini orbiter. Individualrings seen in this image include (in order, starting from most distant): E ring, Pallene ring (visible very faintly in an arc just below Saturn), G ring, Janus/Epimetheus ring (faint), F ring (narrow brightest feature), Main rings (A,B,C), and D ring (bluish, nearest Saturn). Interior to the G ring and above the brighter main rings is the pale dot of Earth.
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General images
The following are images from various Solar System-related articles on Wikipedia.

Image 1Diagram of the Sun's magnetosphere and helioshealth (fromSolar System)
Image 2Diagram of theMilky Way, with galactic features and the relative position of the Solar System labeled. (fromSolar System)
Image 3Relative orbital distances in the Solar System visualized as a condensed rectangle (fromSolar System)
Image 4The four terrestrial planetsMercury,Venus,Earth andMars (fromSolar System)
Image 5Artist's conception of aprotoplanetary disk (fromFormation and evolution of the Solar System)
Image 6Hubble image ofprotoplanetary discs in theOrion Nebula, astellar nursery approximately 25 ly across and estimated to be similar to the primordial nebula from which the Sun formed (fromFormation and evolution of the Solar System)
Image 7Diagram of theLocal Interstellar Cloud, theG-Cloud and surrounding stars. As of 2022, the exact position of the Solar System within the interstellar clouds remains an unresolved question in astronomy. (fromSolar System)
Image 8Animations of the Solar System'souter planets orbiting. This animation is 100 times faster than the inner planet animation. (fromSolar System)
Image 9Orbit classification of Kuiper belt objects. Some clusters that is subjected toorbital resonance are marked. (fromSolar System)
Image 10The four largest asteroids:Ceres,Vesta,Pallas,Hygiea. Only Ceres and Vesta have been visited by a spacecraft and thus have a detailed picture. (fromSolar System)
Image 11The Sun in true white color (fromSolar System)
Image 12Simulation showing outer planets and Kuiper belt:
a) Before Jupiter/Saturn 2:1 resonance
b) Scattering of Kuiper belt objects into the Solar System after the orbital shift of Neptune
c) After ejection of Kuiper belt bodies by Jupiter
  Orbit of Jupiter
  Orbit of Saturn
  Orbit of Uranus
  Orbit of Neptune
(fromFormation and evolution of the Solar System)
Image 13Pierre-Simon Laplace, one of the originators of the nebular hypothesis (fromFormation and evolution of the Solar System)
Image 14Comparison of the distances between planets, with the white bar showing orbital variations. The size of the planets is not to scale. (fromSolar System)
Image 15The sparse plasma (blue) and dust (white) in the tail ofcomet Hale–Bopp are being shaped by pressure fromsolar radiation and the solar wind, respectively.
Image 16Allactive Solar System space probes in 2024 (and a list of upcoming ones) (fromSolar System)
Image 17Anartist's impression of theOort cloud, a region still well within thesphere of influence of the Solar System, including a depiction of the much further insideKuiper belt (inset); the sizes of objects are over-scaled for visibility. (fromSolar System)
Image 18Plot of objects around theKuiper belt and other asteroid populations. J, S, U and N denotes Jupiter, Saturn, Uranus and Neptune. (fromSolar System)
Image 19Diagram of the early Solar System'sprotoplanetary disk, out of which Earth and other Solar System bodies formed (fromSolar System)
Image 20Location of the Solar System within the Milky Way (fromFormation and evolution of the Solar System)
Image 21Animations of the Solar System'sinner planets orbiting. Each frame represents 2 days of motion. (fromSolar System)
Image 22The orbital eccentricities and inclinations of the scattered disc population compared to the classical and resonant Kuiper belt objects (fromSolar System)
Image 23The current Sun compared to its peak size in the red-giant phase (fromSolar System)
Image 24Artist's conception of thegiant impact thought to have formed theMoon (fromFormation and evolution of the Solar System)
Image 25Overview of the inner Solar System up to Jupiter's orbit (fromSolar System)
Image 26Meteor Crater in Arizona. Created 50,000 years ago by an impactor about 50 metres (160 ft) across, it shows that the accretion of the Solar System is not over. (fromFormation and evolution of the Solar System)
Image 27The Solar System (left) within theinterstellar medium, with the different regions and their distances on alogarithmic scale (fromSolar System)
Image 28The planets, zodiacal light and meteor shower (top left of image) (fromSolar System)
Image 29Solar system diagram byEmanuel Bowen in 1747, when neither Uranus, Neptune, nor the asteroid belts had yet been discovered. Orbits of planets are to scale, but the orbits of moons and the sizes of bodies are not. (fromSolar System)
Image 30Relative size of the Sun as it is now (inset) compared to its estimated future size as a red giant (fromFormation and evolution of the Solar System)
Image 31The motion of 'lights' moving across the sky is the basis of the classical definition of planets: wandering stars. (fromSolar System)
Image 32The current orbits ofSedna,2012 VP113,Leleākūhonua (pink), and other verydistant objects (red, brown and cyan) along with the predicted orbit of the hypotheticalPlanet Nine (dark blue) (fromSolar System)
Image 33TheRing Nebula, a planetary nebula similar to what the Sun will become (fromFormation and evolution of the Solar System)
Image 34Neptune and its moonTriton, taken byVoyager 2. Triton's orbit will eventually take it within Neptune'sRoche limit, tearing it apart and possibly forming a new ring system. (fromFormation and evolution of the Solar System)
Image 35The outer planetsJupiter,Saturn,Uranus andNeptune, compared to the inner planets Earth, Venus, Mars, and Mercury at the bottom right (fromSolar System)
Image 36A color enhanced photograph from theMoon of a range of components of the Solar System. The three dots at the lower left are from left to right the planetsSaturn,Mars, andMercury, and in the middle of the picture rises theSun's corona over the darklimb of the Moon, which is from the right lit byearthshine. (fromSolar System)

Did you know –show different entries

...thatNew York'sPanther Mountain(pictured) was the site of aprehistoric meteor crash?

...that theBeethoven crater in theBeethovenquadrangle onMercury is theeleventh largest named impact crater in theSolar System?

...that theplanetMars appears red primarily because of a ubiquitous layer ofdust containingnanophase ferric oxides?

...that the 1997 volcanic eruption ofPillan Patera onJupiter's moonIo was the largesteffusive eruption ever witnessed?

...that thesouth pole of theplanet Mercury is located in theBach quadrangle?

...that theSweden Solar System is currently the world's largestscale model of the Solar System?

...that the dominant feature in theShakespeare quadrangle is the 1300 km wideCaloris Planitia, the largest and best preservedimpact basin onMercury observed by the spacecraftMariner 10?

...that the nearly circular shape ofLukanga Swamp, a wetland covering 2,600 km² inCentral Province,Zambia, has led to speculation that it may be acrater formed by the impact of ameteorite?

More did you know...

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Wikinews Space portal

Major topics

Solar System:Planets (Definition · Planetary habitability · Terrestrial planets · Gas giants · Rings) · Dwarf planets (Plutoid) · Colonization · Discovery timelineˑExploration · Moons · Planetariums

Sun:Sunspot · Solar wind · Solar flare · Solar eclipse

Mercury:Geology · Exploration (Mariner 10 · MESSENGER · BepiColombo) · Transit

Venus:Geology · Atmosphere · Exploration (Venera · Mariner program 2/5/10 · Pioneer · Vega 1/2ˑMagellan · Venus Express) · Transit

Earth:History · Geology · Geography · Atmosphere · Rotation

Moon:Geology · Selenography · Atmosphere · Exploration (Luna · Apollo8/11) · Orbit · Lunar eclipse

Mars:Moons(Phobos · Deimos) · Geology · Geography · Atmosphere · Exploration (Mariner · Mars · Viking 1/2 · Pathfinder · MER)

Ceres:Exploration (Dawn)

Jupiter:Moons(Amalthea,Io · Europa · Ganymede · Callisto) · Rings · Atmosphere · Magnetosphere · Exploration (Pioneer 10/11 · Voyager 1/2 · Ulysses · Cassini · Galileo · New Horizons)

Saturn:Moons(Mimas · Enceladus · Tethys · Dione · Rhea · Titan · Iapetus) · Rings · Exploration (Pioneer 11 · Voyager 1/2 · Cassini–Huygens)

Uranus:Moons(Miranda · Ariel · Umbriel · Titania · Oberon) · Rings · Exploration (Voyager 2)

Neptune:Moons(Triton) · Rings · Exploration (Voyager 2)

Planets beyond Neptune

Pluto:Moons(Charon,Nix,Hydra,Kerberos,Styx) · Geology · Atmosphere · Exploration (New Horizons)

Haumea:Moons(Hi'iaka,Namaka) · Ring

Quaoar:Weywot · Rings

Makemake:S/2015 (136472) 1

Gonggong:Xiangliu

Eris:Dysnomia

Sedna

Small bodies:Meteoroids · Asteroids (Asteroid belt) · Centaurs · TNOs (Kuiper belt · Scattered disc · Oort cloud) · Comets (Hale–Bopp · Halley's · Hyakutake · Shoemaker–Levy 9)

Formation and evolution of the Solar System:History of Solar System formation and evolution hypotheses · Nebular hypothesis

Bold articles arefeatured.
Italicized articles are on dwarf planets or major moons.