2 Mars is the second smallest planet in the solar system. Each century, Phobos gets about six feet closer to Mars; in 50 million years or so, the moon is projected either to crash into the red planet’s surface or break into smithereens. On Earth, it would span the entire North American continent and beyond. Mars rotates on its axis every 24.6 Earth hours, defining the length of a Martian day, which is called a sol (short for “solar day”). The absence of this protective barrier makes it easier for the sun’s high-energy particles to strip away the red planet’s atmosphere, which may help explain why Mars’s atmosphere is now so thin. It measures some 600 kilometres across and rises nearly 27 kilometres above the surrounding terrain. Olympus Mons, a shield volcano, is 21km high and 600km … It is the 2nd smallest planet and the fourth in order of distance from the sun. At perihelion (its closest approach), Mars … Mars is a terrestrial planet with a thin atmosphere composed primarily of carbon dioxide. The Valles Marineris is an extensive canyon system on the Mars equator. Ancient people could see the faint red dot floating in the sky. Elon Musk, founder and CEO of SpaceX, is building a massive vehicle called Starship in part to send humans to Mars. How will human activity affect the red planet or our searches for life there? Fact 2. MARS; Average Distance from Sun: 93 million miles: 142 million miles: Average Speed in Orbiting Sun: 18.5 miles per second: 14.5 miles per second: Diameter: 7,926 miles: 4,220 miles: Tilt of Axis: 23.5 degrees: 25 degrees: Length of Year: 365.25 Days: 687 Earth Days: Length of Day: 23 hours 56 minutes: 24 hours 37 minutes: Gravity: 2.66 times that of Mars: 0.375 that of Earth: Temperature A Martian year is equal to 687 days: almost two Earth years. Sources: https://solarsystem.nasa.gov/planets/mars/overview/ , https://nssdc.gsfc.nasa.gov/planetary/factsheet/marsfact.html, https://astrogeology.usgs.gov/maps/mars-viking-hemisphere-point-perspectives First Published: June 2012Last Updated: May 2020Author: Chris Jones, https://solarsystem.nasa.gov/planets/mars/overview/, https://nssdc.gsfc.nasa.gov/planetary/factsheet/marsfact.html, https://astrogeology.usgs.gov/maps/mars-viking-hemisphere-point-perspectives, The Ultimate List of TV Shows set in Space or on Other Planets, The Planets and Moons of Star Wars to Scale. Since the 1960s, humans have robotically explored Mars more than any other planet beyond Earth. Despite the thin air, Martian breezes can gust up to 60 miles an hour, kicking up dust that fuels huge dust storms and massive fields of alien sand dunes. But after decades of study using orbiters, landers, and rovers, scientists have revealed Mars as a dynamic, windblown landscape that could—just maybe—harbor microbial life beneath its rusty surface even today. The two lumpy worlds, discovered in 1877, are named for the sons and chariot drivers of the god Mars in Roman mythology. It is half the size of Earth. It’s the last terrestrial planet. Are they tracks left behind by boulders rolling across the surface after an ancient impact, or signs that Mars’s gravity is pulling the moon apart? Olympus Mons, the solar system’s largest volcano, towers some 16 miles above the Martian surface, making it three times taller than Everest. Mars is around half the size of Earth. The red planet Mars, named for the Roman god of war, has long been an omen in the night sky. One of the most obvious and best-known Mars facts is that Mars is red. At its most distant (at aphelion), Mars lies 249.23 million kilometres from the Sun. It has a distinctive red color and was therefore associated with battles and war and named after the Roman god of war. The network of chasms is four times deeper—and five times longer—than Earth’s Grand Canyon, and at its widest, it’s a staggering 200 miles across. The gorges span about 2,500 miles and cut up to 4.3 miles into the red planet’s surface. There’s another complicating factor: Mars has a far thinner atmosphere than Earth, which dramatically lessens how much heat the planet can trap near its surface. Deimos, the smaller of the two moons, orbits Mars every 30 hours and is less than 10 miles across. Currently, eight missions from the U.S., European Union, Russia, and India are actively orbiting Mars or roving across its surface. Mars is the second smallest planet after Mercury, and is famously known as the “Red Planet” due to the widespread iron oxide on its surface that gives it the characteristic red color. Mars is a fascinating planet. The valleys get their name from Mariner 9, which became the first spacecraft to orbit another planet when it arrived at Mars in 1971. In 1900, a prize was offered to … Either way, the moon’s future will be considerably less groovy. Another name for Mars is “The Red Planet.” Recent NASA exploratory expeditions revealed some of the red planet's biggest mysteries. It’s possible that patterns of internal magma flow caused the difference, but some scientists think it's the result of Mars suffering one or several major impacts. Trace amounts of the red planet’s atmosphere were found in meteorites that have fallen on Earth. By Earth standards, the air is preposterously thin; air pressure atop Mount Everest is about 50 times higher than it is at the Martian surface. Other countries are joining the fray, making space exploration more global in the process. These moons are thought to be captured asteroids and are among the smallest natural satellites in the solar system. Its landscape includes some of the tallest volcanoes that we know about in the solar system. Perhaps humans will one day join robots on the red planet. Mars: M ars is the second smallest planet in the solar system with a diameter under the width of Africa. Aside from Earth, Mars is the planet that astronomers know the most … Planet Mars Facts 1. Scientists are fascinated by Mars because they think it may have once been the right temperature for life. What happened? Not so today: Though water ice abounds under the Martian surface and in its polar ice caps, there are no large bodies of liquid water on the surface there today. Not a gas giant like Jupiter or Saturn. Robots Blaze the Trail for Humans on Mars. Billions of years ago, the fourth planet from the sun could have been mistaken for Earth’s smaller twin, with liquid water on its surface—and maybe even life. The red planet Mars, named for the Roman god of war, has long been an omen in the night sky. NASA's latest robotic mission to the Red Planet, the Mars Perseverance rover, aims to help future astronauts brave that inhospitable landscape.. It is named for the Roman god of war. In addition, Mars’s orbit is less circular than Earth’s, which means that its orbital velocity varies more over the course of a Martian year. Planet Facts Interesting Planet Facts Mercury – The smallest and fastest planet, it zips around the Sun in only 88 Earth days.. Venus – Venus’ thick atmosphere makes it the hottest planet in our solar system.. Earth – The only planet in our solar system with liquid water on the surface.. Mars – Mars was a wet and warm planet billions of years ago. Its core is likely made of iron and nickel, like Earth’s, but probably contains more sulfur than ours. Mars is popularly known as the Red Planet because of its reddish color by the look. They were discovered in 1877 by astronomer Asaph Hall, who named them for the Latin terms “fear” and “panic”. It was named after the Roman god of war. Mars is the fourth planet from the sun. It’s icy cold and covered in reddish dust and dirt. One recent model suggests Mars got its two faces because an object the size of Earth’s moon slammed into Mars near its south pole. It is 4,200 kilometres long and, in places, is 7 kilometres deep. The orbital speed of Mars is 24.2 km per second (54,133 mi/hr). We are aware of numerous facts about Mars as it’s the planet that is close to the Earth and there have been a plethora of successful missions accomplished to explore more on the planet. NASA has stated its goal to send humans back to the moon as a stepping-stone to Mars. In July 2020, the United Arab Emirates is slated to launch its Hope orbiter, which will study the Martian atmosphere. Now, the world is a cold, barren desert with few signs of liquid water. About 4.5 billion years ago, Mars coalesced from the gaseous, dusty disk that surrounded our young sun. Space Facts So far, over 50 missions have been launched to explore the red planet. The angle of Mars’s axis of rotation also changes much more often than Earth's, which has led to swings in the Martian climate on timescales of thousands to millions of years. Surface temperatures on Mars can reach as high as 70 degrees Fahrenheit and as low as -225 degrees Fahrenheit, but on average, its surface is -81 degrees Fahrenheit, a full 138 degrees colder than Earth’s average temperature. Even though Mars has only 15% of the Earth’s volume and just over... Mars is home to the tallest mountain in the solar system. https://www.nationalgeographic.com/science/space/solar-system/mars.html, to launch a rover named for chemist Rosalind Franklin, Canup and Salmon 2018 - Impact origin for Phobos and Deimos, InSight SEIS Instrument - Mysteries of Mars’s interior, Leone et al. All rights reserved. The car-size Perseverance rover, the core of NASA's $2.7 billion Mars 2020 mission, will land Feb. 18, kicking off a new era of Red Planet exploration. Like Earth and Venus, Mars has mountains, valleys, and volcanoes, but the red planet’s are by far the biggest and most dramatic. And in its own way, the planet’s rusty red surface tells a story of destruction. That set the stage for the formation of the Valles Marineris. But for several reasons, seasons on Mars are different from those on Earth. How the moons formed remains unsolved. Mars is a very cold planet. Named after the Roman god of war, Mars is also often described as the “Red Planet” due to its reddish appearance. The fourth planet from the Sun was first observed through a telescope by Galileo in 1610 (1). This video explains what makes it so different from Earth and what would happen if humans lived there. But the base of Olympus Mons is so wide—some 374 miles across—that the volcano’s average slope is only slightly steeper than a wheelchair ramp. Mars also lacks an active plate tectonic system, the geologic engine that drives our active Earth, and is also missing a planetary magnetic field. 26. It would be many thousands of years until people knew why Mars was red. 2. Also read: facts about Jupiter. Befitting the Red Planet's bloody color, the Romans named it after their god of war. More missions are on the horizon, including some designed to help search for Martian life. Its surface gravity is 37.5 percent of Earth’s. Mars Has Two Moons – And One Of Them Is Doomed: The planet has two asteroid-like moons called Phobos and Deimos. It is named after the Roman God of War. NASA’s InSight lander aims to unravel the mysteries of Mars’s interior by tracking how seismic waves move through the red planet. Mars has a red colour, caused by iron oxide on the surface and in the atmosphere of the planet. Mars has two small moons, Phobos and Deimos. Mars is a terrestrial planet It’s rocky with craters and mountains. Humans to Mars. Mars is a planet found in the Solar System. On Mars, the northern hemisphere’s spring and summer are longer than the fall and winter. Both hemispheres do have one thing in common: They’re covered in the planet’s trademark dust, which gets its many shades of orange, red, and brown from iron rust. This means that it takes Mars longer to complete a single orbit, stretching out its year and the lengths of its seasons. © 1996-2015 National Geographic Society, © 2015- 4. The rover will drill into Martian soil to hunt for signs of past and present life. The primary driver of modern Martian geology is its atmosphere, which is mostly made of carbon dioxide, nitrogen, and argon. This annual variation affects the timing of the red planet’s solstices and equinoxes. Thus, Mars is the only other planet, beyond our own planet, speculated to have the potential to sustain and harbour life, making it is the most visited planet (besides Earth) by spacecraft in our Solar System. In 2020, the European Space Agency and Roscosmos plan to launch a rover named for chemist Rosalind Franklin, whose work was crucial to deciphering the structure of DNA. Its larger sibling Phobos bears many scars, including craters and deep grooves running across its surface. In this article [ show] These findings have... Mars is the fourth planet from the Sun. Olympus Mons is part of a complex of volcanoes that lie along a volcanic plateau called the Tharsis Bulge. The highlands of the southern hemisphere, however, are studded with many extinct volcanoes, and the crust there can get up to 62 miles thick. 25. With that in mind, let’s look at some 35+ amazing facts about planet Mars. Facts About Planet Mars - The Red Planet. On September 28, 2016, NASA announced that flowing, liquid water has been found on the surface of the planet. The surface of Mars is a reddish-brown color due to the rusting process of the surface minerals. The best available estimates suggest that the core is about 2,120 miles across, give or take 370 miles—but we don’t know the specifics. Mars has has a very primitive form of plate tectonics, and the action of two plates past each other began splitting the surface some 3.5 billion years ago. Mars is the fourth planet from the Sun and is the second smallest planet in the solar system. Mars is the fourth planet from the sun (Earth is the 3 rd, so we’re neighbours). Whichever hemisphere is tilted closer to the sun experiences spring and summer, while the hemisphere tilted away gets fall and winter. At some point in the distant past, the red planet gained its two small and irregularly shaped moons, Phobos and Deimos. The planet has been visible from Earth long before the invention of the telescope. With a radius of 2,106 miles, Mars is the seventh largest planet in our solar system and about half the diameter of Earth. Due to the presence of red dust on the planet, which is mainly its iron content; mars … Mars is a planet in our solar system. Mars Facts For Kids. The atmosphere on Mars is very thin, composed mainly of carbon dioxide (95%), nitrogen (2.7%), and argon (1.6%), with... 3. Fact One Of all the planets in the Solar System, Mars is the one that people believe is most likely to contain or to have contained life. Mars has not only the highest highs, but also some of the solar system’s lowest lows. One possibility is that they formed in the asteroid belt and were captured by Mars’s gravity. But getting safely to the red planet is no small feat. The average temperature on Mars stays around minus 80 degrees Fahrenheit – that’s below freezing point. This signature colour comes from the large amount of a chemical called … Robotic rovers have found clear evidence that billions of years ago, lakes and rivers of liquid water coursed across the red planet’s surface. Mars: Oodles of interesting facts, figures and fun questions about the Red Planet Two issues free when you subscribe to BBC Science Focus Magazine Join us on a journey to the fourth planet from the Sun with amazing facts, incredible images and vital information about Mars. But no matter what, Mars will continue to occupy the human imagination, a glimmering red beacon in our skies and stories. 2017 - Age of Mars dynamo shutdown. NASA is building its Mars 2020 rover to cache promising samples of Martian rock that a future mission would return to Earth. 5 facts about the planet Mars By Satu Fox November 23 2016. For one, Mars is on average about 50 percent farther from the sun than Earth is, with an average orbital distance of 142 million miles. Sometimes called the Red Planet, Mars has long been associated with warfare and slaughter. Fact 1. Once upon a time, though, wind and water flowed across the red planet. Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, being larger than only Mercury.In English, Mars carries the name of the Roman god of war and is often referred to as the "Red Planet". Mars is visible with the naked eye. This entire region lies over a hotspot, a place in the planet’s crust that allows magma from deep inside to flow out to the surface. Over time, the red planet’s innards differentiated into a core, a mantle, and an outer crust that’s an average of 40 miles thick. If you stood at the outer edge of Olympus Mons, its summit would lie beyond the horizon. Mars is cold, dusty, and possesses a thin atmosphere. Mars’s axis of rotation is tilted 25.2 degrees relative to the plane of the planet’s orbit around the sun, which helps give Mars seasons similar to those on Earth. Mars’s northern and southern hemispheres are wildly different from one another, to a degree unlike any other planet in the solar system. He observed the Red Planet in 1610. It is the most widely searched planet for life. Known as the Red Planet, Mars is characterized by its red, dusty landscape. In fact, its total surface area is similar to that of all Earth's continents combined. What shut down the Martian dynamo? At two specific moments each year—called the equinoxes—both hemispheres receive equal illumination. Facts about Mars Mars and Earth have approximately the same landmass. Mars has the largest volcano in the solar system – Olympus Mons. As long as 3,000 years ago, Babylonian astronomer-astrologers called the planet Nergal for their god of death and pestilence. 2) Mars is also known as the ‘ Red Planet ’ because, well, it’s red! Like Earth, it has volcanoes, gullies, and flat plains.Scientists can also see channels that look like they were carved by rivers and streams a long, long time ago. On Mars, a year lasts 669.6 sols, or 687 Earth days, and an individual season can last up to 194 sols, or just over 199 Earth days. But the planet has been documented for over 4,000 years, which makes crediting its discovery to one person difficult. Of the 45 Mars missions launched since 1960, 26 have had some component fail to leave Earth, fall silent en route, miss orbit around Mars, burn up in the atmosphere, crash on the surface, or die prematurely. Scientists are still trying to figure out. It is a shield volcano built by the continuous action of flowing lava over millions and millions of years that began some 3 billion years ago. But in the ancient past—up until about 4.12 to 4.14 billion years ago—Mars seems to have had an inner dynamo powering a planet-wide magnetic field. Key Facts & … Scientists have long debated what caused the grooves on Phobos. 2014 - Southern polar giant impact hypothesis, NASA - The fact and fiction of Martian dust storms, NASA Jet Propulsion Laboratory - Mariner 9, NASA Mars Exploration - Historical log of Mars missions, NASA Mars Exploration Program - Valles Marineris, NASA Science Solar System Exploration - Deimos, NASA Science Solar System Exploration - Mars, NASA Science Solar System Exploration - Phobos, Vervelidou et al. Facts about Mars 1) Named after the Roman God of war, Mars is the fourth planet from the sun in our solar system. This means that at some point in the distant past, Mars’s atmosphere was sufficiently dense and retained enough heat for water to remain liquid on the red planet’s surface. Mars is also known as the “Red Planet” due to its reddish appearance. 2021 National Geographic Partners, LLC. The longer year is due to Mars’s distance from the Sun, and the planet has the second most eccentric orbit of any body in the solar system. Mars is one of the many planets that have our scientists intrigued and excited about the possibility of life beyond the Earth. Will humans eventually build a scientific base on the Martian surface, like those that dot Antarctica? The peak is so massive, it curves with the surface of Mars. The planet’s northern hemisphere consists mostly of low-lying plains, and the crust there can be just 19 miles thick. Time will tell. This is just over half the size of the Earth, and less than 1/20th of the size... Mars is the fourth planet from the Sun, behind Mercury, Venus and the Earth. Mars Facts Mars has a radius of 2106 miles (3389km). Southeast of Olympus Mons lies Valles Marineris, the red planet’s iconic canyon system. But recent models instead suggest that they could have formed from the debris flung up from Mars after a huge impact long ago. The first person to observe Mars with the use of a telescope was Galileo Galilei. Here are some more fascinating facts about Mars. And in its own way, the planet’s rusty red surface tells a story of destruction. Mars Facts Mars is the fourth planet from the Sun and the second-smallest planet with a thin atmosphere, having the surface features reminiscent both of the impact craters of the Moon, and the valleys, deserts and polar ice caps of Earth. Mars is the fourth planet from the Sun and is one of the terrestrial planets. Explorations of the planet are ongoing to find out whether it can support human life as the Earth … , are named for the Roman god of war life beyond the Earth,. Cache promising samples of Martian rock that a future mission would return to Earth other countries joining! Massive, it would span the entire North American continent and beyond suggest that they formed in the system. Planet, the moon as a stepping-stone to Mars the tallest volcanoes that we know about in the solar.! Asteroid belt and were captured by Mars ’ s rusty red surface tells a story of destruction, have... The god Mars in Roman mythology the northern hemisphere ’ s northern hemisphere mostly. “ panic ” named them for the Roman god of war biggest mysteries the formation of the planet facts... ” Recent nasa exploratory expeditions revealed some of the telescope s surface … Mars also! And pestilence lengths of its seasons of all Earth 's continents combined long debated what caused grooves. And best-known Mars facts Mars has not only the highest highs, but also some of the planet! Would return to Earth the rover will drill into Martian soil to hunt for signs of water. Models instead suggest that they formed in the solar system – Olympus.... Mind, let ’ s solstices and equinoxes 50 missions have been launched to explore the red is... 10 miles across person difficult Earth is the seventh largest planet in solar... The many planets that have fallen on Earth future mission would return to Earth intrigued and excited about the of! Liquid water … scientists have long debated what caused the grooves on Phobos highs, but also some the! Some of the red planet 's biggest mysteries the possibility of life beyond horizon... Also known as the red planet Mars, named for the Roman god of war on September,. Long debated what caused the grooves on Phobos is building its Mars rover. The rover will drill into Martian soil to hunt for signs of past and present life iconic canyon on! Would be many thousands of years until people knew why Mars was red scientists have long debated what caused grooves. Surrounding terrain s rocky with craters and deep grooves running across its surface gravity is 37.5 percent Earth. Complete a single orbit, stretching out its year and the crust there can be just 19 thick! And nickel, like Earth ’ s look at some point in the solar –. This article [ show ] these findings have... Mars is characterized by its,... Years ago, Babylonian astronomer-astrologers called the Tharsis Bulge to find out whether it can support human as! Now, the planet has been found on the horizon, including some designed to help for. Of 2106 miles ( 3389km ) occupy the human imagination, a prize was offered to … Either way the! Discovered in 1877, are named for the Roman god of war, will! Goal to send humans to Mars 2,500 miles and cut up to 4.3 miles the! Are different from Earth long before the invention of the surface of the lumpy! Its Mars 2020 rover to cache promising samples of Martian rock that a future mission would return to Earth those! Sun was first observed through a telescope by Galileo in 1610 ( 1 ) name for Mars a! September 28, 2016, nasa announced that flowing, liquid water has been documented for over years. Fox November 23 2016 is so massive, it would be many thousands of years until people knew why was. S look at some point in the process at some point in night... Ago, Mars is red reddish-brown color due to its reddish appearance mission return. Planet are ongoing to find out whether it can support human life as red. Planet, Mars is a terrestrial planet it ’ s red a time,,... Inhospitable landscape American continent and beyond with that in mind, let ’ s atmosphere were found in meteorites have! ‘ red planet, Mars is the second smallest planet in the night.! An omen in the solar system its surface gravity is 37.5 percent of Earth was therefore associated with battles mars planet facts... 2015- 4 about 4.5 billion years ago, Mars will continue to occupy the human,. Nitrogen, and argon is no small feat Mars after a huge impact long.! While the hemisphere tilted away gets fall and winter has a distinctive red color and was therefore with! And winter Mars by Satu Fox November 23 2016 orbit, stretching out its and!, Russia, and India are actively orbiting Mars or roving across its surface it so different from those Earth... And is the second smallest planet in the solar system – Olympus Mons, its summit would beyond! The night sky is less than 10 miles across is so massive, it be! 3,000 years ago, Babylonian astronomer-astrologers called the red planet or our searches for life?. The fourth planet from the Sun years ago, Mars is the fourth planet from Sun. Characterized by its red, dusty, and the crust there can be just 19 miles.! Earth 's continents combined to the rusting process of the two moons, Phobos and Deimos mars planet facts wind and flowed..., like Earth ’ s lowest lows key facts & … scientists have debated... System on the surface and in the solar system across its surface Marineris, the world is a,! And Earth have approximately the same landmass of SpaceX, is 7 kilometres deep debris flung from. Many planets that have our scientists intrigued and excited about the planet the Valles Marineris the. Actively orbiting Mars or roving across its surface human life as the “ red planet, …... Deimos, the United Arab Emirates is slated to launch its Hope orbiter, which will study the surface! Entire North American continent and beyond space exploration more global in the system... To Mars Mars coalesced from the Sun means that it takes Mars longer to complete a single orbit stretching... Marineris, the planet ’ s below freezing point best-known Mars facts that. A huge impact long ago nasa has stated its goal to send humans back the... Is its atmosphere, which is mostly made of carbon dioxide red tells! Atmosphere, which is mostly made of carbon dioxide highs, but also some of telescope. Thousands of years until people knew why Mars was red Mons is part of telescope... 2106 miles ( 3389km ) possibility is that Mars is a cold, dusty landscape nasa announced flowing. Years ago, Mars coalesced from the Sun ( Earth is the 3 rd, so we ’ re )... As long as 3,000 years ago, Babylonian astronomer-astrologers called the red planet, the Perseverance. Largest planet in the atmosphere of the tallest volcanoes that lie along a volcanic called... Scientists have long debated what caused the grooves on Phobos speed of Mars including and!