The Aerospace Exploration Agency of Japan, for example, plans to launch in 2024 the Mars Moons eXploration mission to visit both Phobos and Deimos. Hall didn't find any moons for a long while and actually became so disconsolate that he considered giving up the search, but after some encouragement from his wife, Angeline Stickney Hall, he persisted and found two satellites within several nights of each other. German Aerospace Center (DLR) Unfortunately, because of the very small size of both satellites, Mars skywatchers should not expect to see the same kind of sight that Earthlings are accustomed to seeing with their own moon. Astronomy Test #4 Flashcards | Quizlet Over a period of 1.5 to 3.5 minutes, a sequence of seven or eight images was acquired as Deimos moved across the field of view. It is possible that Jupiters gravity may have nudged them into orbit around Mars, allowing the red planet to capture them. This enables the researchers to model the interiors of the moons and put constraints on their origin. Mars is named after the Roman god of war, while its moons, Phobos and Deimos, are named after the horses that pulled the chariot of the god himself. A little over four hours later, it would already have moved well past the overhead point to a position roughly halfway up in the east and would appear "full." The most recent theory about the births of Phobos and Deimos proposes that an early collision once scattered debris into a ring surrounding Mars, and later accreted into the young moons. Humans to Mars. Dust coverage. Landis, G. A., "Origin of Martian Moons from Binary Asteroid Dissociation," American Association for the Advancement of Science Annual Meeting; Boston, MA, 2001; Lee, P. et al. [41], Another concept of sample-return mission from Phobos and Deimos is OSIRIS-REx2, which would use heritage from the first OSIRIS-REx. Want To Explore Mars? Send Humans To The Moons Of Mars First: Phobos This will eventually cause the moon to crash into Mars or break apart, creating a ring of debris. Joe is an 8-time Emmy-nominated meteorologist who served the Putnam Valley region of New York for over 21 years. The common progenitor of Phobos and Deimos was most probably hit by another object and shattered to form Phobos and Deimos. Which force diagram represents the forces on the Dakota? -Earth's Moon -small asteroids -particles in the rings of Saturn -comets, The planet in our solar system with the highest average surface temperature is _____. And Phobos is doomed: because its orbit is below synchronous altitude tidal forces are lowering its orbit (current rate: about 1.8 meters per century). Amusingly, in the late 1950s and 60s, the unusual orbital characteristics of Phobos led many astronomers to speculate that it was hollow inside. Both moons appear to be made of carbon-rich rock mixed with ice. The Moon, Phobos and Deimos orbit their planets in the same direction. [10] The name was suggested by academic Henry Madan, who drew from Book XV of the Iliad, where Ares (the Roman god Mars) summons Dread (Deimos) and Fear (Phobos).[17]. Astronomy 4 Flashcards | Quizlet All this focus on Mars, but theres a case to be made for the moons of Mars, Phobos and Deimos to serve as the first places we visit in the region. From the five or six short-time exposures, two to four images usually included Deimos. It was found six days after its smaller siblingDeimoswas found. Some scientists believe that this impact must have nearly shattered Phobos. Getting to and from Deimos would actually be easier, needing about 400 meters/per second less change in velocity. Improved knowledge of their orbits will also shed new light on the history of the satellite system. Deimos (far left) and Phobos are shown together as they actually were photographed by NASA's Mars rover Curiosity on Aug. 1, 2013. Gravity may had drawn the remaining rocks into the two oddly shaped bodies. One crater on Phobos that stands out in spacecraft observations measures roughly 6 miles (10 km) across and has been named "Stickney" in honor of Asaph Hall's wife. [38] Ultimately, the mission chosen to fly was MESSENGER, a probe to the planet Mercury. Base camps that would let us gather our resources in relative safety before dropping down into that gravity well. About Us | Privacy Policy | ContactLittle Astronomy is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Orbits of Mars Express and the Martian moons. Assuming an approximately 1000 km tether extending upwards from Phobos and a 3000 km tether dangling from Deimos the two moon elevators could share a Zero Relative Velocity Transfer Orbit (ZRVTO). The ring was slowly formed into the two moons of Mars, Phobos and Deimos. ESA-ESTEC, The Netherlands They are believed to be captured asteroids. Phobos, in fact, would probably even briefly eclipse Deimos as seen from some parts of Mars on each pass. In a paper accepted for publication in Astronomy & Astrophysics, the researchers describe how they used a new astrometric technique, in which the centre-of-figure of non-spherical Deimos was determined by fitting the predicted limb (visible edge) of the satellite to the observed limb. [5], NASA Ames Research Center would design, develop, build, and test the PADME spacecraft, and manage mission operations. Diagram D, = P12 Q.30. To find out Joe's latest project, visit him on Twitter. [1] [2] [3] [4] [5] The PADME mission competed for Discovery Program funding, but lost to the Psyche and Lucy missions. [5], The orbiter could also carry an optional laser communications experiment. orbital speed, v, of Phobos to that of Deimos? - Brainly.com The lines for what are the lower and upper limits in terms of size for what is a moon are not clearly defined. Deimos has the least craters out of the 3 due to its smaller size. Then theyd come home, maybe even making a side visit over to Deimos on the way back, taking another 250 days to return. Overall, its exploration history is similar to those of Mars and of Phobos. Both guns use the same slug ammo, but deimos gets all of the normal downsides for no benefit at all. However, because the north and south poles on Mars are oriented a bit differently than they are on Earth, the stars would appear to wheel across the sky on somewhat different paths. Phobos goes through its entire cycle of phases in the short time it takes to go once around Mars. This Prime Day you can fly high with up to 50% off these Holy Stone drones, Jam packed issues filled with the latest cutting-edge research, technology and theories delivered in an entertaining and visually stunning way, aiming to educate and inspire readers of all ages, Engaging articles, breathtaking images and expert knowledge. Astronomy Test 2 Review Module 6 Flashcards | Quizlet But how do they compare to each other? Both are heavily cratered. Phobos And Deimos & Mars Environment ( PADME) is a low-cost NASA Mars orbiter mission concept that would address longstanding unknowns about Mars' two moons Phobos and Deimos and their environment. In contrast, Deimos is far enough from Mars to take more than one Martian day to complete each orbit, so it is spiralling slowly outwards. Mars and Jupiter Comparison. This limb was projected onto the SRC image, and then fitted to the observed limb during a series of manual and automated steps. , ifting is 5.8 W 57 W 210 W 2.1 kW 1.5 kW A) B) C) (D) E, Do different types of materials affect air resistance differently?. What was the source of heat that melted Earth? Asaph Hall discovered Phobos in the United States Naval Observatory in Washington DC. [18] Both Deimos and Phobos have very circular orbits which lie almost exactly in Mars' equatorial plane, and hence a capture origin requires a mechanism for circularizing the initially highly eccentric orbit, and adjusting its inclination into the equatorial plane, most likely by a combination of atmospheric drag and tidal forces;[19] it is not clear that sufficient time was available for this to have occurred for Deimos. "It is unclear whether they are asteroids that were captured by Mars or whether they coalesced from a ring of material that formed around the planet after a large object collided with Mars, although the latter scenario seems to be favoured in recent years," said Olivier Witasse, ESA's Mars Express project scientist. Type above and press Enter to search. [1][3][4][5] The proposal is to employ the proven Modular Common Spacecraft Bus (MCSB), previously used by the LADEE Moon orbiter. Any astrometric measurement requires good knowledge of the observer's location and viewing direction. Breaking space news, the latest updates on rocket launches, skywatching events and more! [42], In March 2014, a Discovery class mission was proposed to place an orbiter in Mars orbit by 2021 and study Phobos and Deimos. Deimos /dams/ (systematic designation: Mars II)[10] is the smaller and outermost of the two natural satellites of Mars, the other being Phobos. The third-angle projection shows: Studying closer to the red planet than any another scientist, he found the smaller moons orbiting the planets equator. Many among them have already discussed the possibility of using one of the Martian moons as space station from which astronauts could observe the Red Planet and even launch robots to its surface. It is the largest crater discovered on Phobos, covering a significant portion of the moons surface. [3][4][5][6] The Principal Investigator is Anthony Colaprete. LikeMimascrater Herschel (on a smaller scale) the impact that created Stickney must have almost shattered Phobos. [a] Hall, who also discovered Phobos shortly afterwards, had been specifically searching for Martian moons at the time. Top, front, and side views. The moons of Mars, Phobos (Fear) and Deimos (Terror), are very close to the planet compared to Earth?s Moon. This page was last edited on 4 January 2022, at 02:22. If someone stood on the Mars-facing side of Phobos, Mars would take up the majority of the sky view. But how did the capture occur? This site is using cookies under cookie policy . Phobos is closer to its primary than any other moon in the solar system, less than 6000 km above the surface of Mars. phobos is Greek for fear (the root of phobia). Furthermore, about every 10 hours and 18 minutes, Phobos would appear to race closely past Deimos as the two moons trekked in opposite directions. In reality, only our Moon should be referred to as such, while the ones on other planets should be called natural satellites, but lets face it, thats just too many words, so for convenience sake, we are going to refer to them as moons as well. You've only got 12 hours left to grab this deal on the Sony FE 16-35mm f/2.8 GM Lens! From Mars, they dont appear as moons. The moons could exchange passengers and cargo with virtually zero propellent. Phobos and Deimos are more irregularly shaped. [32], Deimos regularly passes in front of the Sun as seen from Mars. Moons of Mars: 10 Facts about Phobos and Deimos that will Surprise you. Super-close supernova captivates record number of citizen scientists, By Tariq Malik, Elizabeth HowellJuly 14, 2023. [24] Its covered in fine powder made from eons of micrometeorite impacts, and has absolutely no atmosphere. The Moon has a spherical shape. Both moons take stable, almost circular paths around Mars. Basically a day/the amount of time it takes the orbiting thing to orbit around something What is the orbit period of Phobos? C. Either a front, top, or side view. Among the moons of the solar system, Marss moons are listed as one of the smallest [1]. Phobos and Deimos are too small to hold one. You can specify conditions of storing and accessing cookies in your browser, The moons of Mars, Phobos (Fear) and Deimos (Terror), are very close to the planet compared to, Earth?s Moon. The scientists detailed their findings online Feb. 22 in the journal Nature Astronomy. Diagram D shows a box with a downward and upward arrow with the downward arrow larger in size. In the case of the observations from Mars Express, the position of the spacecraft and the direction in which the camera was pointing were derived from navigational data provided by the European Space Operations Centre (ESOC) in Darmstadt, Germany. Deimos, for example, would appear only about one-nineteenth the apparent width of Earth's moon. Their shapes are irregular, their surfaces are similar to the surface of the Moon - dark with a lot of maria and craters. Name the two rovers that explore Mars as part of the MER (Mars Exploration Rover Mission). Our team works hard to ensure that you enjoy reading our articles; thus, wed love to hear your feedback about the website. And then, the Martian explorer would have to wait another 66 hours before Deimos again reappeared above the eastern horizon! However, there is also the possibility that it will break up before impact and form a planetary ring. The only terrestrial planets in the solar system that have moons are Earth and Mars. Even though its less massive than the Earth, Mars still has a significant gravity well. The moons of Mars, Phobos and Deimos, might have both arose from the remains of a larger moon that once orbited the Red Planet, a new study finds. You can find him on Twitter and YouTube tracking lunar and solar eclipses, meteor showers and more. [18], As seen from Mars, Deimos would have an angular diameter of no more than 2.5 minutes (sixty minutes make one degree), one twelfth of the width of the Moon as seen from Earth, and would therefore appear almost star-like to the naked eye. Some where around 12 to 12.5 km What is Deimos' orbit distance? Diagram A and more. Regions near the north pole of Deimos would be in constant sunlight and also have a constant view down to the surface of Mars. Not to mention the increased challenge of landing heavier payloads on Mars, filled with soft and squishy humans. If you had 68 kilograms / 150 pounds, you would weigh on Phobos 68 grams / two ounces. How A New Mission To Phobos Could Rewrite The History Of Mars - Forbes Email: Olivier.Witasseesa.int Deimos gets 10% more damage that it never gets to use and that doesn't matter anyway, for a bunch of extra downsides. Diagram C shows a box with shortest arrow pointing left, equal arrows pointing up and down, and longest arrow pointing right. But an astronaut standing there would see these two moons move across the night sky in quite different ways. They are approximately 140 times smaller than Earths Moon. The following fact sheet compares the characteristics of both of Mars moons and the Moon. Though Phobos is the closest moon to its host than any other satellite in the solar system, it still appears when viewed from Mars, a third as wide as Earths moon. Flyby altitudes at closest approach to Phobos and Deimos would be ~2km. Among the moons of the solar system, Mars's moons are listed as one of the smallest [ Japan Aerospace Exploration Agency (JAXA) intends to launch the Mars Moons eXploration (MMX) mission to visit Phobos and Deimos, to collect samples and return in 2029. And what makes them so powerful? Perseverance rover digs up diverse set of organic molecules on the Red Planet, Space.com's top 20 Prime Day deals: telescopes, binoculars, cameras and more, NASA selects new head of science for the James Webb Space Telescope. In approximately 50 million years scientists have predicted Phobos will be destroyed due to the tidal forces of the Red Planet. The Moons of Mars Flashcards | Quizlet Study with Quizlet and memorize flashcards containing terms like Mars has two moons, Phobos and Deimos, that are most similar in character to _____. The Sun-synodic orbital period of Deimos of about 30.4 hours exceeds the Martian solar day ("sol") of about 24.7 hours by such a small amount that 2.48 days (2.41 sols) elapse between its rising and setting for an equatorial observer. The moon is gradually spiraling inward, drawing about 1.8 meters / 6 ft closer to the Red Planet each century. Just like our moon, the Martian moons always present only one side of their face towards the Red Planet. (This is the opposite effect to that operating to raise the orbit of theMoon.). Deimos is possibly an asteroid that was perturbed by Jupiter into an orbit that allowed it to be captured by Mars, though this hypothesis is still controversial and disputed. They are more likely composed of a mixture of rock and ice. Phobos orbit period is 7.7 hours and is below the synchronous orbit radius which means it moves around Mars faster than the planet moves. However, Bagheri noted, the impact that formed that basin is thought to have happened in the very early stages of solar system formation. Phobos - The Nine Planets Such knowledge is particularly important in the interpretation of gravity field data, acquired during very close flybys. In a 2003 paper entitled Space Colonization Using Space-Elevators from Phobos, NASA engineer Leonard Weinstein looked into the feasibility of this idea. In Depth | Phobos - NASA Solar System Exploration When it comes to the worlds beyond Earth in our Solar System, it's only natural to wonder whether our planet was alone in being home to native life. Diagram C Just like Deimos, scientists believe that Phobos was an asteroid from our Solar Systems. So it has the distinction of being the only natural satellite in the solar system that revolves around its host planet in a time shorter than the planetary "day," running three laps around the Red Planet during each Martian day. how long would it take to fly from the US to Japan if they are 7600 miles apart and the plane was flying at 600 miles per hour? He discovered Deimos the next night, and Phobos six nights after that. In Greek mythology, Phobos is one of the sons of Ares (Mars) and Aphrodite (Venus). For one day only, the Celestron Cometron 7x50 binoculars are now just $23.76! AST 101 final (TEST 3) Flashcards | Quizlet [5], PADME could launch on a Medium-lift class launch vehicle. Spirit, Opportunity. Mastering astronomy HW#5 Flashcards | Quizlet [citation needed], Because Deimos's orbit is relatively close to Mars and has only a very small inclination to Mars's equator, it cannot be seen from Martian latitudes greater than 82.7. A second elevator could even carry material up to the orbit of Deimos. Study with Quizlet and memorize flashcards containing terms like What do we mean when we say liquid water is unstable on Mars?, Why are the polar caps larger during the Martian winter?, How can we recognize the oldest surface regions of Mars? Name the two moons of Mars, which are probably captured asteroids. If you could look up at the night sky from the surface of Mars, what would you see? Like Phobos, Deimos is heavily cratered, rich in carbon, and believed to have water ice. What is the ratio of the orbital speed, v, of Phobos to that of Deimos? What's next for India's Chandrayaan-3 moon rover mission? It seems likely that Phobos and Deimos formed elsewhere and were subsequently captured by Mars. Was it made possible by a thicker Martian atmosphere long ago. New York, Jupiter shines near the moon with the Seven Sisters of the Pleiades on July 14. Since the Earth rotates from west to east on its axis more than 27 times faster than the moon revolves once around its companion planet, Earthlings are accustomed to seeing the moon rise in the east, cross the sky and set in the west. [33] Deimos has been photographed close-up by several spacecraft whose primary mission has been to photograph Mars, including in March 2023 during a rare close encounter by the Emirates Mars Mission. Mars Moon Double-Take: What Would Martian Skywatchers See? In a 2013 presentation, Lockheed Martin Engineer Josh Hopkins proposed that Phobos and Deimos make sense as the first place for exploration by humans, and made the case that Deimos is even better. And there is no "South Star" either, although the Martian south polar axis does point toward a spot in the constellation Vela, not far from the diamond-shaped pattern of stars known as the "False Cross" (not to be confused with Crux, the Southern Cross). I wasnt there for the seminar, but Alan Boyle from Geekwire was, and he captured this cool photo of Logans talk. "Comparisons with current orbit models indicate that Deimos is ahead of, or falling behind, its predicted position by as much as +3.4 km or -4.7 km, depending on the chosen model. You may neglect the effects of air resistance. [3][4][5], Once in Mars orbit, PADME would carry out 16 flybys of Phobos followed by 9 flybys of Deimos. For example, some people believe that Charion, an object orbiting around Pluto, could be considered a dwarf planet and the system should be a binary planet instead of a dwarf planet-moon. Check it out here. The craters Swift and Voltaire are named after writers who speculated on the existence of two Martian moons before Phobos and Deimos were discovered. When you purchase through links on our site, we may earn an affiliate commission. The electricity takes path of least resistancealong Jupiter's magnetic field lines to the planet's surface, creating lightning in Jupiter's upper atmosphere. Phobos and Deimos, the. Credit: NASA - See more at:. Heres Why, Nine Of The Most Surprising Facts About Andromeda Galaxy, 11 strange facts about Milky Way Galaxy you should know. An atmosphere may have slowed the pair down and settled them into their present-day orbits; however, Marss atmosphere is too thin and insufficient for such a task. Their orbital radii are 9,378 km and 23,459 km respectively. Space is part of Future US Inc, an international media group and leading digital publisher. [35] These samples would be returned to Earth for study three years later. Phobos ( / fobs /; systematic designation: Mars I) is the innermost and larger of the two natural satellites of Mars, [8] the other being Deimos. [24] It is cratered, but the surface is noticeably smoother than that of Phobos, caused by the partial filling of craters with regolith. Quora - A place to share knowledge and better understand the world Hall named the moons Phobos ("fear") and Deimos ("panic"), after the two sons of the Roman god Mars; those figures served as Mars' chariot attendants as well as his constant companions. Instead of going directly from Earth to the surface of Mars, humanity could set up a station on these. Deimos, on the other hand, is slowly drifting away from Mars. Phobos And Deimos: study guides and answers on Quizlet Of the 18 spacecraft given the task of landing on the surface of Mars, only 9 have actually made it down safely and were actually able to carry out their mission. Thats 50%. However, this scenario faces a number of challenges of its own. Copyright 2000 - 2023 European Space Agency. Some clarifications on the meaning of some of these stats: Periapsis: The nearest point in the orbit of the moon in relation to its planet, Apoapsis: The farthest point in the orbit of the moon in relation to its planet, Orbital period: The times it takes for the moon to orbit its planet, Density: Quantity of mass per unit volume, Apparent magnitude: Brightness of the object as seen from Earth. Phobos And Deimos & Mars Environment (PADME) is a low-cost NASA Mars orbiter mission concept that would address longstanding unknowns about Mars' two moons Phobos and Deimos and their environment. Study with Quizlet and memorize flashcards containing terms like Rank the planets from left to right based on their average distance from the Sun, from farthest to closest., Rank the planets from left to right based on their mass, from highest to lowest, Rank the planets by size (average equatorial radius) from largest to smallest and more. Heres how it works. Now Bagheri and his colleagues suggest a new possibility that Phobos and Deimos both originated from the remnants of a shattered moon. Our neighboring planet, Mars, has two moons orbiting around it just like our Moon orbits around Earth. In 1997 and 1998, the proposed Aladdin mission was selected as a finalist in the NASA Discovery Program. Phobos has an impact crater which is 9 km wide, called Stickney. A) 1.582 B) 3.956 C) 0.3998 D) 0.2528 E) 2.858 Discovered 1877 August 18 byHall; photographed byMariner9 in 1971,Viking1 in 1977, andPhobosin 1988. Here's how to see them. Future US, Inc. Full 7th Floor, 130 West 42nd Street, Before that happens, however, strong tidal forces induced by Mars should break Phobos into a myriad of particles that would encircle Mars in a series of thin rings. Credit: NASA/JPL-Caltech/JHU/APL. The Viking probe has shown that the moon is not made of solid rock but instead has a significant porosity. Another theory proposes that an early moon of Mars could have suffered a collision with a very large object, Phobos and Deimos remained as the only remnants. Now consider the situation with Mars' moons. During a recent presentation at a conference in Seattle about space settlement, Logan suggested that it should be possible to build a permanent habitat inside Deimos. For Mars, the scientific consensus is that it has two planets: Phobos and Deimos, named after the Greek gods of fear and dread respectively. Between July 2005 and July 2011, the spacecraft made 50 approaches to Deimos, passing within 14 000 km of the satellite. [18] Geoffrey Landis has pointed out that the capture could have occurred if the original body was a binary asteroid that separated due to tidal forces. Charles Q. Choi is a contributing writer for Space.com and Live Science. The precise positions of these stars are known from catalogues based on data returned by ESA's Hipparcos satellite. [5] Flybys would take place at two-week intervals. [1][5], The origin of Mars' moons, which were discovered by astronomer Asaph Hall, remains unknown. Other principals include Pascal Lee (Deputy Principal Investigator) and Butler Hine (Project Manager). Some have suggested that, as seen from Mars, Phobos would resemble a shiny potato in the sky. Current estimates predict that this will happen in around 50 million years or so. The astronomer used a 26-inch refractor to study the region aroundMars. Why does Mars surface change? Take an interactive tour of the solar system, or browse the site to find fascinating information, facts, and data about our planets, the solar system, and beyond. Mars satellites do not appear have one. We would like to show you a description here but the site won't allow us. Anyway, if Starship does fly, then NASA just becomes a customer, and gets to do these missions cheaper, faster, with more redundancy and safety. Phobos. Both satellites revolve around Mars in nearly circular orbits, and very nearly in the plane of the planet's equator. In a paper accepted for publication in Astronomy & Astrophysics, the researchers describe how they used a new astrometric technique, in which the centre-of-figure of non-spherical Deimos was determined by fitting the predicted limb (visible edge) of the satellite to the observed limb. Institute of Planetary Research Moon of Mars, probably captured asteroid. The scientists analyzed the latest data about Mars, Phobos and Deimos, including Martian seismic data from NASAs InSight lander currently operating on the Red Planet, to see how these bodies might have evolved over time. Astronomers have deduced that Phobos is drawing closer to Mars at the rate of 0.7 inches (1.8 centimeters) per year and conceivably could crash into the Red Planet in 40 million to 50 million years. The three moons have been considered as part of plans for space exploration. For any place on the Red Planet's surface beyond 83 degrees north or south of the equator, for example, Deimos could never be seen. This means that in 30-50 millions it will collide with the red planet or break up to form a ring like the ones in Saturn. Try picturing this: During the 66 hours that Deimos moves ponderously in the sky toward the west, Phobos whizzes rapidly in the opposite direction more than six times! "Moons of Mars the Center for Planetary Science", "Planetary Satellite Physical Parameters", Monthly Notices of the Royal Astronomical Society, "Dynamical evidence for Phobos and Deimos as remnants of a disrupted common progenitor", "Moons of Mars Planetary Sciences, Inc", "Mars Reconnaissance Orbiter eye candy: HiRISE images Deimos", "Deimos: Facts About the Smaller Martian Moon", Mars Phobos and Deimos Survey (M-PADS)A Martian Moons Orbiter and Phobos Lander, "Amazing images of Mars's moon Deimos snapped by Emirates Mars Mission", "Messenger and Aladdin Missions Selected as NASA Discovery Program Candidates", "Five Discovery mission proposals selected for feasibility studies", "NASA Selects Missions to Mercury and a Comet's Interior as Next Discovery Flights", "Dr. Britt The Gulliver Mission: Sample Return from Deimos", "OSIRIS-REx II to Mars Mars Sample Return from Phobos and Deimos", 45th Lunar and Planetary Science Conference (2014), "Making the Case for a Mission to the Martian Moon Phobos", "First up-close images of Mars's little-known moon Deimos", "This is our 1st detailed look at Mars' most mysterious moon Deimos (photos) - The debate over the moon's origin story is not over yet", "EMM unveils new Deimos observations at EGU23, extends mission", https://en.wikipedia.org/w/index.php?title=Deimos_(moon)&oldid=1162316743, This page was last edited on 28 June 2023, at 09:45.