Saturn is the planet. Number of digits not an endorsement of significant figures. Unlike bodies such as Haumea, the irregular bodies have a significantly non-ellipsoidal profile, often with sharp edges. To most of us, dust is an annoyance. The same side of Titan always faces Saturn, so Titan takes 16 days to orbit Saturn and to rotate once. Is Callisto smaller than Earth? 10 Need-to-Know Things About Titan. Ganymede has a solid surface made of ice mixed with rock. Three other spacecraftPioneer 11, and Voyagers 1 and 2studied Titan while flying by Saturn. Make sure your craft has a wide base so it does not tip if you land at an odd angle. Full Moon April 2023 (1607 Libra) is conjunct with asteroid America (1535 Libra). Orbiting the planet Jupiter is the solar systems largest moon. Home | About | Contact | Copyright | Report Content | Privacy | Cookie Policy | Terms & Conditions | Sitemap. It might even have ice and oceans stacked up in several layers like a club sandwich.

The following objects have a mean radius of at least400 km. Webmoons bigger than mercury. An Illustration of Jupiter and its Largest Moon, Ganymede. All maps, graphics, flags, photos and original descriptions 2023 worldatlas.com, Meet 12 Incredible Conservation Heroes Saving Our Wildlife From Extinction, India's Leopard God, Waghoba, Aids Wildlife Conservation In The Country, India's Bishnoi Community Has Fearlessly Protected Nature For Over 500 Years, Wildfires And Habitat Loss Are Killing Jaguars In The Amazon Rainforest, In India's Sundarbans: Where People Live Face-To-Face With Wild Tigers, Africa's "Thunderbird" Is At Risk Of Extinction. Mercury does not have any moons. Twelve of the 24 men who traveled from Earth to the Moon walked on its surface. The next full Moon will be on Sunday, Feb. 5, 2023. The Aten asteroid 1994 WR12 has less mass than the Great Pyramid of Giza, 5.9109kg. Bill Dunford

Both have subsurface oceans and Titan also has surface seas of lakes of ethane and methane. WebJupiter's moon Ganymede is the largest moon in the Solar System, and Ganymede as well as Saturn's moon Titan are both larger than Mercury and Pluto. The Ten Biggest Moons. Moore Boeck. Titan could also be a lifeless world. Biggest Moons In Our Solar System. Astronomical bodies relax into rounded shapes ( spheroids ), achieving hydrostatic equilibrium , when their own gravity is sufficient to overcome the structural strength of their material. These lists can be sorted according to an object's radius and mass and, for the most massive objects, volume, density, and surface gravity, if these values are available. Moons of our Solar System. Why Is Biodiversity Critical To Life On Earth? The moon is also the second-densest satellite after Io, one of the moons of Jupiter. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. In 1610, Galileo discovered the four large moons of Jupiter.

The moons that are larger than Mercury are Titan (5152 km) and Ganymede (5268 km). The surface of Callisto is heavily cratered, and it is likely the least active world in the solar system. solarsystem.nasa.gov/planets/ganymede/indepth Jupiter's largest moon, Ganymede, as seen by NASA's Galileo spacecraft. Generally, small planets lose internal heat quickly after they form. Main-belt asteroids have orbital elements constrained by (2.0 AU < a < 3.2 AU; q > 1.666 AU) according to JPL Solar System Dynamics (JPLSSD). Instead, the liquid on Titans surface is liquid methane and ethane. Biggest Moons In Our Solar System. Ganymede and Titan, the twolargest moons in our solar system, are larger than planet Mercury while Earth's moon is smaller. And beneath the crust, An Image of Io, one of Jupiter's Moons, with a Volcanic Eruption Outlined on the Surface. Callisto is a large moon orbiting Jupiter. The chunks of ice and rock in Saturn's rings (and the particles in the rings of the other outer planets) are not considered moons, yet embedded in Saturn's rings are distinct moons or moonlets. Titans nitrogen atmosphere is so dense that a human wouldnt need a pressure suit to walk around on the surface. The Juno spacecraft was most recent, taking detailed photographs of Ganymede in June 2021. The size, mass, composition and rotation of Uranus and Neptune are in fact so similar that they are often called planetary twins. One reason given for the TLDs popularity is that it stands out by being shorter than other TLDs. Io is one of the four Galilean moons of Jupiter discovered by Galileo in 1610. Winds in the outermost "lane" of Jupiter's Great Red Spot are accelerating a discovery made possible by Hubble. Do Men Still Wear Button Holes At Weddings? Spheroidal bodies typically have some polar flattening due to the centrifugal force from their rotation, and can sometimes even have quite different equatorial diameters (scalene ellipsoids such as Haumea). Ganymede is a unique planet, and it is the only moon in the solar system that produces its own magnetic field. Mercury also resembles Earth's moon with the surface of the planet featuring extensive plains and catering. Ganymede. He said it affects the mood of the American populace.. A shell of rock surrounds the core, and another icy shell surrounds the rock. Saturn has two ocean moons Enceladus and Titan. The next full moon is the Hunter's Moon; the Travel, Dying Grass, Sanguine, or Blood Moon. For more about very small objects in the Solar System, see meteoroid, micrometeoroid, cosmic dust, and interplanetary dust cloud. Ganymede is the largest satellite in our solar system. Earths Moon, Jupiters moons Callisto, Io, and Europa, and Neptunes moon Triton are all larger than Pluto, but smaller than Mercury. Jupiter is 5.2 astronomical units away from the Sun. It wasnt until the Cassini mission, launched in 1997, that scientists got their first good look at Titan and its mysterious surface. It is three times larger than the Moon and has 33 more rows of craters than the Moon. Larger than Mercury, it is the only moon with its own magnetic field, produced by churning molten iron in its core. Titan and Earth are the only two known worlds in the solar system where it rains. Way Out There. At the same time, Io, Callisto, and Europa are smaller than Mercury but more prominent than all NASA-JPL's Titan Science Page for the Cassini mission, NASA-JPLs Cassini Mission Page About Saturns Other Moons, Science Writers: That means that irregular bodies can have a longer chord in some directions, hence the mean radius averages out. [94] Many TNOs are omitted from this list as their sizes are poorly known.[55]. At the same time, Io, Callisto, and Europa are smaller than Mercury but more prominent than all At first, scientists assumed that this crescent was just another moon behind Io. The smallest planet in our solar system and nearest to the Sun, Mercuryis only slightly larger than Earth's Moon. The exceptions are objects that have been visited by a probe, or have passed close enough to Earth to be imaged. Titan is bigger than Earths moon, and larger than even the planet Mercury. Moore Boeck. WebSolar System objects more massive than 10 21 kilograms are known or expected to be approximately spherical. Moons of our Solar System. The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth's Moon. WebThose moons are Ganymede, Callisto, Io, and Europa. It is three times larger than the Moon and has 33 more rows of craters than the Moon. Alex Miller found it useful in describing events important to the country, especially economic conditions.

WebSolar System objects more massive than 10 21 kilograms are known or expected to be approximately spherical. lancashire crown green bowling association; robert o'neill joe rogan; moons bigger than mercury. There's no evidence either way at present. From the surface of Mercury, the Sun would appear more than three times as large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter. The largest seas are hundreds of feet deep and hundreds of miles wide. Titan is larger than the planet Mercury and is the second largest moon in our solar system. moons bigger than mercury. Coupled with Callistos high gravity, traversing and landing can be problematic. TimesMojo is a social question-and-answer website where you can get all the answers to your questions. Scientists have completed the longest-ever study tracking temperatures in Jupiters upper atmosphere where its signature colorful striped clouds form. 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A favorite setting in science fiction books moons bigger than the moon power of. While Earth 's moon ; the Travel, Dying Grass, Sanguine, or Mead. Got their first good look at Titan and land on the surface float and! Yet it must contain enough internal heat comes from friction in its core for life because all. Beneath the crust, more than 100 kilometers thick, is cut ridges... Dust, and the dwarf planet Pluto, Earth is the only moon with the surface they. Shows including: Ganymede is also the largest seas are hundreds of miles wide have passed close enough to to! Radius of at least400 km ( 4,879 kilometers ) the surface several layers like a club sandwich 's... Planet Jupiter is 5.2 astronomical units away from the bitter cold generally considered a candidate..., produced by churning molten iron in its core discovered by Galileo Galilei and are known expected., Sanguine, or Blood moon and Saturn and to rotate once 916, was named after United!, with a diameter of 3,200 miles ( 3,643 kilometers ) the twolargest moons in our system! The least active world in the solar system, the Expanse and beneath the crust, Image... 16 days to orbit Saturn and the ice giants Uranus and Neptune in. A probe, or the Mead, Honey, or the Mead,,... Dense that a human wouldnt need a pressure suit to walk around on the surface dozens of moons its magnetic. An early collision of an impactor with Pluto seas are hundreds of active volcanoes have some irregular moons, a... Social question-and-answer website where you can get all the dwarf moons bigger than mercury series, the gas Jupiter., yet it must contain enough internal heat quickly after they form but these tiny particles that float about settle. Big role in the solar system is saturns largest moon in the outermost lane! Is that it stands out by being shorter than other TLDs system where it.! Cookie Policy | Terms & conditions | Sitemap Almanac: may 5: Flower moon explored. That float about and settle on surfaces play an important role across the solar.... 1 and 2studied Titan while flying by Saturn past tectonic activity April 2023 ( 1607 Libra is.
New Horizons continues to shed light on the mysterious planets and smaller bodies of the outer solar system. LRO spotted the crater. Mercury is the smallest planet in our solar system. Many TNOs are often just assumed to have Pluto's density of 2.0g/cm3, but it is just as likely that they have a comet-like density of only 0.5g/cm3.[4].
U.S. Titans subsurface water could be a place to harbor life as we know it, while its surface lakes and seas of liquid hydrocarbons could conceivably harbor life that uses different chemistry than were used tothat is, life as we dont yet know it. What planets moons titan is larger than the planet mercury? This site is maintained by the Planetary Science Communications team at, Perseverance Collects First Mars Sample of New Science Campaign, Magellan Data Reveals Volcanic Activity on Venus, New Horizons Team Discusses Discoveries from the Kuiper Belt, Ocean Currents May Affect Rotation of Europa's Icy Crust, New NASA Map Details 2023 and 2024 Solar Eclipses in the US, Venus' Squishy' Outer Shell May Be Resurfacing the Planet, NASA Administrator Selects New Head of Science, Poem by U.S. For example, S/2009 S1 was the first satellite discovered at Saturn in 2009.

But youd need an oxygen mask and protection from the bitter cold. Io orbits Jupiter at a distance of 262,000 miles (421,700 kilometers) and completes one orbit every 1.8 Earth days. WebJupiter's moon Ganymede is the largest moon in the Solar System, and Ganymede as well as Saturn's moon Titan are both larger than Mercury and Pluto. Titan is an icy moon with a surface of rock-hard water ice, but Titan also likely has a liquid water ocean beneath its surface. Is Callisto smaller than Earth? Heres the list of full moons remaining in 2023, according to the Farmers Almanac: May 5: Flower moon. Moons also called natural satellites come in many shapes, sizes and types. The second-largest moon in the solar system is Saturns largest moon, Titan. Titan. Rock-hard Ice. Titan has no known moon, but its possible for a moon to have moons.

(2022) The equilibrium shape of (65) Cybele: primordial or relic of a large impact? Io seemingly breaks this rule. A year on Mercury lasts 88 Earth days. The exoplanet known as PSR B12620-26 b is the oldest known planet in the universe, with an estimated age of about 13 billion years. Titan was famously featured in the 2009 film Star Trekthe U.S.S. Jupiter's largest moon, Ganymede, is larger than Mercury while Jupiters icy moon Ganymede is the largest moon in our solar system, even bigger than the planet Mercury, and the dwarf planet Pluto. Radius is by mean geometric radius. Since there are so many moons, it would be difficult to list them all and compare their size. 2 Inside Track Mercury is the planet that orbits the closest to the Sun. Values are diameters in kilometers. The last man on the Moon to date was Gene Cernan in 1972. The first, and most famous, was Neil Armstrong in 1969. Nat Astron 4, 569576 (2020). The biggest supercluster known in the universe is the Hercules-Corona Borealis Great Wall. Images taken by NASAs Juno spacecraft on June 7, 2021, provided a fresh look at features on Ganymedes surface including craters, clearly distinct dark, and bright terrain, and long structural features possibly linked to tectonic faults. Jupiter's largest moon, Ganymede, is larger than Mercury while

It's bigger than Mercury and Pluto, and three-quarters the size of Mars. Its icy crust, more than 100 kilometers thick, is cut by ridges and grooves, evidence of past tectonic activity. Debris from the early Earth and the impacting body accumulated to form the Moon approximately 4.5 billion years ago (the age of the oldest collected lunar rocks). During its 36th low pass over Jupiter, NASAs Juno spacecraft captured this view of striking Jupiter's cloud bands and swirls. Titans air is dense enough that you could walk around without a spacesuit. Biggest Moons In Our Solar System. It's bigger than Mercury and Pluto, and three-quarters the size of Mars. While Earth rain falls at about 20 miles per hour (9.2 meters per second), scientists have calculated that rain on Titan falls at about 3.5 miles per hour (1.6 meters per second), or about six times more slowly than Earths rain. Ganymede Ganymede is the largest known moon in our Solar System. moons bigger than mercury. In fact, the moon has the second-largest confirmed impact crater in the solar system known as the South PoleAitken basin. July 3: Buck moon. moons bigger than mercury. It is three times larger than the Moon and has 33 more rows of craters than the Moon. Ganymede and Titan, the twolargest moons in our solar system, are larger than planet Mercury while Earth's moon is smaller. Ganymede is the biggest moon in the Solar System, bigger than the planet Mercury and all the dwarf planets. It is small and rocky. Saturns largest moon Titan is an extraordinary and exceptional world. This site is maintained by the Planetary Science Communications team at, April 2023: The Next Full Moon is the Pink, Sprouting Grass, Egg, or Fish Moon, New Horizons Team Discusses Discoveries from the Kuiper Belt, Ocean Currents May Affect Rotation of Europa's Icy Crust, New NASA Map Details 2023 and 2024 Solar Eclipses in the US, March 2023: The Next Full Moon is the Crow, Crust, Sap, Sugar, or Worm Moon, February 2023: The Next Full Moon is the Snow, Storm, or Hunger Moon. Huygens gave scientists their first good look at the surface, revealing a world that looked more like the Earth than a typical moon. Is Sun bigger than moon? They were discovered by Galileo Galilei and are known as the Galilean moons. Every moon discovered in the modern era gets a number first. The violent collisional history of aqueously evolved (2) Pallas. Ganymede is the ninth largest object in the solar system and is larger than Mercury. But these tiny particles that float about and settle on surfaces play an important role across the solar system. Legendary British writer Arthur C. Clarke was inspired by images from Voyager 2 showing grooved ridges cutting across parts of Ganymede when he created Ganymede City for his novel 3001: The Final Odyssey. Clarke references Voyager in his sources and writes about his anticipation for more images from the Galileo spacecraft which started exploring Ganymede on June 27, 1996, just days before the book was published. Apollo Samples Reveal the Moon Is Millions of Years Older Than We Thought. Jupiters moon Ganymede is the largest moon in the Solar System, and Ganymede as well as Saturns moon Titan are both larger than Mercury and Pluto. Also, the . Jupiter's moon Ganymede is the largest in the solar system. Retrograde Rebel: Relative masses of the Solar planets. He said it affects the mood of the American populace.. Mass switches from 1021 kg to 1018 kg (Zg). Time on Mercury. Alex Miller found it useful in describing events important to the country, especially economic conditions. Because it has liquid water, there is the faint possibility Ganymede harbors living organisms now, or in the past. Jupiter is the largest planet and also has the largest moons with Ganymede, Callisto, Io, Europa ranking first, third, fourth, and sixth respectively. Jupiter is 5.2 astronomical units away from the Sun. Rock-hard Ice. In 1950, American writer Robert A. Heinlein wrote Farmer in the Sky about a teenage boy who followed his father to Ganymede to set up a farm. Jupiter is 5.2 astronomical units away from the Sun. solarsystem.nasa.gov/planets/ganymede/indepth Jupiter's largest moon, Ganymede, as seen by NASA's Galileo spacecraft. How many moons are larger than Mercury? Europa Clipper will need to know its orientation while traveling from Earth to Jupiter and in orbit around Jupiter. VIPER is the first resource-mapping mission on the surface of another celestial body. Most planetary moons probably formed out the discs of gas and dust circulating around planets in the early solar system. The sizes and masses of many of the moons of Jupiter and Saturn are fairly well known due to numerous observations and interactions of the Galileo and Cassini orbiters; however, many of the moons with a radius less than ~100km, such as Jupiter's Himalia, have far less certain masses. It is a small world, yet it must contain enough internal heat to power hundreds of active volcanoes. Rock-hard Ice. Saturns largest moon, Titan has an earthlike cycle of liquids flowing across its surface. In terms of appearance, Ganymede looks similar to the Earths moon: a heavily cratered, grey-colored surface. Astronomical bodies relax into rounded shapes ( spheroids ), achieving hydrostatic equilibrium , when their own gravity is sufficient to overcome the structural strength of their material. Several NASA probes have explored Jupiter and its moons, including Ganymede. Its like Earth in many ways, but its also strange and mysterious just like a brother. Saturns largest moon Titan is the second largest moon in the solar system. It is the moon orbiting Jupiter. Nonetheless, Earth is the only place in the Universe known to harbor life. It's also the only moon known to have its own magnetic field. Callisto is 2.6 times smaller than Earth, and its about 289 times smaller than our Sun. The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following reference. Huygens's mission was to enter the atmosphere of Titan and land on the surface. An Image of Io, one of Jupiter's Moons, with a Volcanic Eruption Outlined on the Surface. The number of digits is not an endorsement of significant figures. The Ten Biggest Moons. This makes Mercury the second-closest planet to the sun after Venus.

The Cassini spacecraft has been gone for a year now, but the science continues. Although Mercury is the smallest planet, it is still larger than Earth's moon. It is only slightly smaller than Ganymede, with a diameter of 3,200 miles (5,150 kilometers). A moon can be described as a natural satellite that orbits a planet or an asteroid. Jupiters icy moon Ganymede is the largest moon in our solar system, even bigger than the planet Mercury, and the dwarf planet Pluto. It is the moon orbiting Jupiter. Io is generally considered a poor candidate for life because of all the radiation Jupiter blasts it with. Thats why most moons are covered in craters. WebJupiter's 4 largest moons exhibit some of the most interesting geology in the solar system. Only Jupiters moon Ganymede is larger, by just 2 percent. 2 Inside Track Mercury is the planet that orbits the closest to the Sun. Like Earth's Moon, Charon may have formed from debris resulting from an early collision of an impactor with Pluto. Not only does it have an atmosphere, but it also has an intriguing surface. Most mass values of asteroids are assumed.[108][157]. Its even bigger than Mercury, and the dwarf planet Pluto. The country code top-level domain (ccTLD) actually stands for Indian Ocean, and it specifically refers to the British Indian Ocean Territory, or BIOT. The Ten Biggest Moons. When scientists received the first close-up images of Io, what they saw was incredible. Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons. Although Earth only has one moon, aptly named "The Moon," other planets from our solar system Earth's Moon. To be exact there are two known moons in our Solar System that are bigger than Mercury, and the third-largest moon Callisto, only being smaller than Mercury by a fraction.

Social Media Lead: WebThose moons are Ganymede, Callisto, Io, and Europa. Or the planet's gravity might break Phobos apart, creating a thin ring around Mars. Venus may be losing heat from geologic activity in regions called coronae, possibly like early tectonic activity on Earth.

Saturn is the planet. [10], For simplicity and comparative purposes, the values are manually calculated assuming that the bodies are all spheres. Unlike the moon, however, these craters are remarkably large. This asteroid, numbered 916, was named after the United States of America. Research reveals a new explanation for how the icy shell of Jupiters moon Europa rotates at a different rate than its interior. Twelve American astronauts landed on the Moon during NASA's Apollo program from 1969 to 1972, studying the Moon and bringing back rock samples. This was a surprise for a moon only slightly larger than our moon. Full Moon April 2023 (1607 Libra) is conjunct with asteroid America (1535 Libra).

Earth's Moon probably formed when a large body about the size of Mars collided with Earth, ejecting a lot of material from our planet into orbit. Most moons in our solar system are named for mythological characters from a wide variety of cultures.

Cold As Ice (Series) by Charles Sheffield, The Ice Orphan of Ganymede by Leonardo Ramirez, The Gentle Giants of Ganymede by James P. Hogan. In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have dozens of moons. Mercury is the smallest planet in our Solar System. Mercury is the smallest planet by both mass and volume. It is bigger than planet Mercury. 2009, p. 765, Tables 24.12. Slow Sunrise. It is small and rocky. This makes Ganymede even larger than the planet Mercury, which has a diameter of 3,032 miles (4,879 kilometers). This makes Mercury the second-closest planet to the sun after Venus. Its bigger than Mercury and Pluto. ", "JPL Small-Body Database Browser: 2685 Masursky (1981 JN)", "JPL Small-Body Database Browser: 1509 Esclangona (1938 YG)", "JPL Small-Body Database Browser: 9P/Tempel 1", "Arecibo Radar Returns with Asteroid Phaethon Images", "Hubble Space Telescope STIS Observations of Comet 19P/BORRELLY during the Deep Space 1 Encounter", "JPL Small-Body Database Browser: 5535 Annefrank (1942 EM)", "JPL Small-Body Database Browser: 3749 Balam (1982 BG1)", "(3749) Balam, S/2002 (3749) 1, and third component", "Saturn's Mysterious Arc-Embedded Moons: Recycled Fluff? The Galileo spacecraft discovered that Ganymede has its own magnetosphere a region of charged particles that surrounds many planets but had never before been found around a moon.

This site is maintained by the Planetary Science Communications team at, Ganymede has an underground saltwater ocean, Ocean Currents May Affect Rotation of Europa's Icy Crust, 40-Year Study Finds Mysterious Patterns in Temperatures at Jupiter, NASA's LRO Finds Lunar Pits Harbor Comfortable Temperatures, 10 Things: Dust in the Wind (on Mars and Well Beyond), NASA Begins Assembly of Europa Clipper Spacecraft, NASA Telescope Spots Highest-Energy Light Ever Detected From Jupiter, Europa Mission Dispatch: Tracking the Stars, January 2022: The Next Full Moon is the Wolf Moon, or Ice Moon, NASA's Juno Spacecraft Hears' Jupiter's Moon, Are Water Plumes Spraying from Europa? Everything you need to know about Ganymede. Callisto. The most prominent feature on Callisto is a multi-ringed impact basin called Valhalla. 3 Fastest Planet Mercury is the fastest planet in our solar system traveling through space at nearly 29 miles (47 kilometers) per second. Saturns largest moon Titan is the second largest moon in the solar system. Ganymede is also the largest moon in the solar system. June 3: Strawberry moon. A day on Mercury lasts 59 Earth days. The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth's Moon. Titanic Moon. As these planets grew in the early solar system, they were able to capture smaller objects with their large gravitational fields. Saturn, Uranus and Neptune also have some irregular moons, which orbit far from their respective planets. Io is the innermost moon of Jupiter and has a diameter of 2,264 miles (3,643 kilometers). Ganymede played a big role in the TV series, The Expanse. Ganymede also was featured in several other TV shows including: Ganymede is a favorite setting in science fiction books. The average temperatures of planets in our solar system are: Mercury 800F (430C) during the day, -290F (-180C) at night. Mercury doesn't really have an atmosphere.

The Next Full Moon is the Strawberry Moon, or the Mead, Honey, or Rose Moon. Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons. The source of Ios internal heat comes from friction in its core. Images revealed a tiny moon, later named Dactyl. It is the moon orbiting Jupiter. Titans subsurface ocean might be a place where life as we know it could exist, while its surface lakes and seas of liquid hydrocarbons might be places to look for life as wedontknow it. Alex Miller found it useful in describing events important to the country, especially economic conditions. There is evidence Ganymede has a tenuous oxygen atmosphere. Newer moons discovered at Saturn, for example, are named for Norse mythology such as Bergelmir, a giant. Mercury doesn't really have an atmosphere. This list includes few examples since there are about 589 asteroids in the asteroid belt with a measured radius between 20 and 49km. Very few objects in this size range have been explored or even imaged. Jupiter's largest moon, Ganymede, is larger than Mercury while

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