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    Mars Exploration: Interesting Facts, Challenges & Latest Missions

    what is mars exploration and its challenges

    We have only sent rovers to Mars, one of the most visited planets in our solar system, to investigate the alien terrain. Numerous findings from NASA missions indicate that Mars had a thicker atmosphere and was considerably wetter and warmer billions of years ago. It will take significant technological advancements to send humans to Mars in space.

    Re-entry into the thin and shallow Martian atmosphere will be highly challenging because, in contrast to Earth's much denser atmosphere, any spacecraft entering the Martian atmosphere will descend very quickly to the surface and must be slowed down. Read along to learn about Mars exploration and the details.

    Team Digit

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    What is Mars Exploration?

    Mars exploration involves the study and investigation of Mars, the fourth planet from the Sun, to understand its environment, geology, and potential for supporting life. This exploration is conducted through a combination of robotic missions, including orbiters, landers, and rovers, as well as plans for human missions.

    Spacecraft have conducted remote explorations of Mars. Since the late 20th century, Earth-based probes have contributed significantly to our understanding of the Martian system, particularly its geology and potential for habitability. The engineering of interplanetary travel is challenging, and attempts to explore Mars have yielded mixed results, particularly in the early phases.

    Approximately 60% of all spacecraft that were supposed to go to Mars failed before they could finish their missions, and several failed even before they could start taking observations. Specific missions have experienced unexpected success, including the twin Mars Exploration Rovers Spirit and Opportunity, which ran for years longer than planned.

    How Long Does it Take to Go to Mars?

    Mars is the second nearest planet to Earth after Venus, located fourth from the sun. However, since they orbit the sun, Earth and Mars' distance from one another constantly changes. Theoretically, when Earth is at its farthest (aphelion) and Mars is at its closest point to the sun (perihelion), Earth and Mars will be the nearest to one another.

    The distance between the planets would only be 33.9 million miles (54.6 million km), but there is no historical record of this. In 2003, the two planets came within the closest known approach, separated by just 34.8 million miles (56 million kilometres).

    The location of Earth and Mars, and the technology available to get there, will all play a role in the response. NASA estimates that a trip to the Red Planet would take roughly nine months, round trip. It would take approximately 21 months to complete a round trip since you would need to wait three months on Mars to ensure that Earth and Mars are in a good position before continuing.

    What is the Atmosphere of Mars Like?

    The layer of gases that envelops Mars is known as its atmosphere. Its main constituents are argon (2%), molecular nitrogen (2.85%), and carbon dioxide (95%). Water vapour, oxygen, carbon monoxide, hydrogen, and noble gases are also present in trace amounts.

    Mars's atmosphere is significantly colder and thinner than Earth's, with a maximum density of 20g/m3 (about 2% of Earth's value) and a typical temperature of -60 degrees Celsius. The average surface pressure is less than 1% of Earth's value, or roughly 610 pascals (0.088 psi).

    Liquid water cannot exist on Mars's surface due to the planet's weak atmosphere, although numerous studies indicate that the atmosphere was formerly much thicker. Since the planet's core began to slow down, gases have leaked out of Mars' atmosphere and lost mass to space.

    What are the Goals of Mars Exploration?

    goals of mars exploration

    NASA lists the MEP's (Mars Exploration Program) four main objectives related to comprehending the possibility of life on Mars.

    1. Find Out if Life Ever Existed on Mars

    Determining whether or not life has ever existed on Mars requires first determining whether or not the planet is suitable for life to comprehend Mars' potential for habitability. The fundamental tenet of the MEP, known as "Follow the Water," is the notion that, at least on Earth, water exists wherever there is life. Finding locations where water is, was, or might be present is a primary objective of the MEP.

    Superoxide abundance virtually eliminates sunlight as a potential source of life's energy, making life on Mars' surface extremely implausible. As a result, it is necessary to look for alternate energy sources, including chemical and geothermal energy. Microscopic life forms under the surface of Mars may exploit these sources, which are also utilised by life forms on Earth.

    The existence of carbonate minerals and the fact that carbon dioxide makes up most of Mars' atmosphere suggest that water may have been on the planet for a considerable amount of time, long enough to support the emergence of life.

    2. Characterise the Martian Climate

    Another objective of the MEP is to characterise Mars's environment in the past and present and the variables influencing climate change on the planet. It is understood that seasonal variations in Mars' ice caps, dust carried by the atmosphere, and water vapour exchanged between the planet's surface and atmosphere all influence the planet's temperature.

    Gaining insight into these climatic events enables scientists to more accurately simulate the historical climate of Mars more accurately, leading to a deeper comprehension of the planet's dynamics.

    3. Describe the Features of Mars' Geology

    Mars has a geology different from Earth's because of its enormous volcanoes and lack of crust movement, among other factors. Understanding these distinctions from Earth and how tectonics, wind, water, volcanoes, cratering, and other processes have created Mars' surface is one of the MEP's objectives.

    By identifying minerals that are only formed in water, rocks can help scientists determine whether water was abundant on Mars in the past. They can also choose whether Mars once had a magnetic field, indicating that the planet was dynamic and similar to Earth.

    4. Get Ready for Human Mars Exploration

    A human expedition to Mars would be challenging to engineer. Before any steps are taken towards putting humans on Mars, scientists would need to fully comprehend as much of the planet's dynamics as possible because the planet's surface is home to superoxides and lacks an ozone layer and magnetosphere to guard against solar radiation.

    What are the Challenges of Mars Exploration?

    By terrestrial standards, Mars is the most habitable place in the solar system after Earth. It might have formerly sustained life, according to several lines of evidence that have been gathered over decades. There will undoubtedly be many unique difficulties in transporting humans to Mars, ranging from technological and logistical issues to human aspects and the distances required. Here are a few challenges:

    • Mars is on average about 225 million kilometers away from Earth. Communication signals take between 4 to 24 minutes to travel one way, depending on the positions of Earth and Mars in their orbits.
    • Extreme cold with temperatures averaging around -80 degrees Fahrenheit (-60 degrees Celsius) and reaching as low as -195 degrees Fahrenheit (-125 degrees Celsius).
    • Mars has a thin atmosphere, which makes it challenging to slow down spacecraft during descent. EDL operations are critical and complex because precise manoeuvres are needed to land safely on the Martian surface.
    • Due to Mars' distance from the Sun and dust storms, limited solar energy can reduce solar panel efficiency. Surface dust can coat equipment and affect mechanical operations.
    • Exposure to high radiation levels due to Mars' thin atmosphere and lack of a global magnetic field. Long-duration space travel impacts physical and mental health, including muscle atrophy, bone density loss, and psychological stress.
    • Developing durable and reliable equipment that can withstand Mars' harsh conditions and operate autonomously due to communication delays. Ensuring robust life support systems and technologies for sustaining human life on Mars.
    • Bringing back samples from Mars requires careful planning and execution to ensure contamination risks are minimised and scientific integrity is maintained. Coordinating multiple spacecraft and mission phases (landing, sample collection, ascent, rendezvous, and return) adds complexity and risk.
    • Mars missions are expensive due to the technological challenges, long duration, and need for advanced spacecraft. Securing adequate funding and resources over many years is crucial for successful Mars exploration missions.
    • Coordinating efforts among multiple space agencies and countries. Addressing legal and ethical issues concerning planetary protection, resource utilisation, and potential future human settlement on Mars.

    Latest Mars Exploration

    As part of NASA's Mars 2020 project, Perseverance, also known as Percy, is a car-sized Mars rover built to investigate the Jezero crater on the planet. The Jet Propulsion Laboratory produced it, and on July 30, 2020, at 11:50 UTC, it was launched. On February 18, 2021, at 20:55 UTC, confirmation that the rover had successfully touched down on Mars was received.

    Perseverance has been in operation on Mars for 1209 sols, or 1,242 Earth days, three years, four months, and twenty-six days, as of July 14, 2024. NASA dubbed the landing location Octavia E. Butler Landing after the rover arrived. Four primary science goals of the Perseverance rover complement the science goals of the Mars Exploration Programme:

    Searching for Habitability To locate historical habitats that could have supported microbiological life. In those livable conditions, look for indications of potential former microbial life.
    Looking for Biosignatures Particularly in certain types of rock that are known to retain evidence throughout time, the rover will look for biosignatures.
    Sample Caching Sample caching involves gathering core rock and regolith (loose, unconsolidated "soil") samples, which are then stored inside the rover and later transferred to a sample return rocket.
    Prepare for Humans Testing the Martian atmosphere's capacity to produce oxygen as a human precaution.

    During the initial scientific campaign, Perseverance drives southward in an arching manner from its landing location to the Séítah unit. This allows it to "toe dip" into the unit and gather remote sensing data on geology targets. Following that, it will go back to the Crater Floor Fractured Rough in order to retrieve the initial core sample. The first science campaign ends with passing over the landing place of Octavia E. Butler.

    9 Interesting Facts about Mars Planet

    Only Mars has dispatched rovers to examine its hostile environment, making it one of its most explored planets. Numerous findings from NASA missions indicate that Mars had a thicker atmosphere and was considerably wetter and warmer billions of years ago.

    S.No   Interesting Facts
    1 Eponymous Mars's reddish hue, which evoked blood, led the ancient Romans to name it after their god of battle. Other cultures also gave the planet names; the Egyptians termed it "Her Desher," which translates to "the red one." It is still commonly called the "Red Planet" because iron minerals in Martian soil oxidise or rust, giving the surface a red appearance.
    2 Potential for Life Scientists do not anticipate that life is currently flourishing on Mars. Instead, they search for traces of ancient life from when Mars was wetter and had more water.
    3 Dimensions and Range At 2,106 miles (3,390 km) in radius, Mars is roughly half the size of Earth. Mars would be approximately the size of a raspberry if Earth were the size of a nickel. Mars is 1.5 astronomical units from the Sun, about 142 million miles (228 million km) on average. The distance between the Sun and Earth is one astronomical unit, or AU for short. The trip from the Sun to Mars at this distance takes 13 minutes.
    4 Moons Phobos and Deimos, two of Mars's minor moons, might have been taken by asteroids. Because they don't have enough mass for gravity to make them spherical, they have potato-shaped bodies. The Greek god of war, Ares, gave the moons their names based on the horses who pulled his chariot.
    5 Rings There are no rings on Mars. But if Phobos collides with Mars or fragments in 50 million years, it might leave behind a dusty ring surrounding the planet.
    6 Formation Mars formed when spinning gas and dust were drawn in by gravity to become the fourth planet from the Sun around 4.5 billion years ago when the solar system was settling into its present configuration. Like the other terrestrial planets, Mars is roughly half the size of Earth and has a solid crust, a rocky mantle, and a central core.
    7 Structure At the centre of Mars is a thick core that varies in radius from 930 to 1,300 miles (1,500 to 2,100 kilometres). It is composed of sulphur, nickel, and iron. A thick rocky mantle between 770 and 1,170 miles (1,240 and 1,880 kilometres) surrounds the core, while a crust of iron, magnesium, aluminium, calcium, and potassium sits on top. The depth of this crust ranges from 6 to 30 miles (10 to 50 kilometres).
    8 Atmosphere The main gases that make Mars's thin atmosphere are argon, nitrogen, and carbon dioxide. Due to suspended dust, the sky would appear red and foggy to us rather than the usual blue hue we observe on Earth. Mars's thin atmosphere provides little defence against strikes from objects like meteorites, asteroids, and comets.
    9 Magnetosphere Although there is currently no magnetic field on Mars, regions of the southern hemisphere of the Martian crust are strongly magnetised, suggesting the presence of a magnetic field 4 billion years ago.

     

    For thousands of years, astronomers, stargazers, and anybody with a passing curiosity about worlds other than our own have been fascinated by Mars, also known as the Red Planet. In the meantime, we're continuously discovering new things about the rocky planet because of the almost constant advancement of technology.

    FAQs about Mars Exploration

    In what ways does Mars exploration help us?

    Learning more about the Red Planet will help us understand its past and future and could even shed light on whether extraterrestrial life exists. Mars is a fertile ground for scientific research and a major force behind the development of technology.

    Learning more about the Red Planet will help us understand its past and future and could even shed light on whether extraterrestrial life exists. Mars is a fertile ground for scientific research and a major force behind the development of technology.

    What dangers come with visiting Mars?

    To transform the concept of a Red Planet trip from a work of fiction into a reality, NASA's Human Research Programme has identified five risks including radiation from space, seclusion and confinement, separation from Earth, gravity and its absence, and enclosed or unfavourable surroundings.

    To transform the concept of a Red Planet trip from a work of fiction into a reality, NASA's Human Research Programme has identified five risks including radiation from space, seclusion and confinement, separation from Earth, gravity and its absence, and enclosed or unfavourable surroundings.

    What is the longest a human can live on Mars?

    Mars has too little gravity, many deserts, and bitter freezing temperatures. You would get extremely parched as all your body fluids, including mucus, saliva, etc., evaporated. You would only have around two minutes to spend on Mars if you didn't have a protective suit.

    Mars has too little gravity, many deserts, and bitter freezing temperatures. You would get extremely parched as all your body fluids, including mucus, saliva, etc., evaporated. You would only have around two minutes to spend on Mars if you didn't have a protective suit.

    Why is Mars exploration critical?

    Mars exploration helps us understand planetary formation, search for signs of past or present life, and potentially pave the way for human colonisation.

    Mars exploration helps us understand planetary formation, search for signs of past or present life, and potentially pave the way for human colonisation.

    How long does it take to travel to Mars?

    The travel time to Mars varies depending on the positions of Earth and Mars in their orbits. Typically, it takes around 6-9 months using current spacecraft technology.

    The travel time to Mars varies depending on the positions of Earth and Mars in their orbits. Typically, it takes around 6-9 months using current spacecraft technology.

    What are rovers, and why do we send them to Mars?

    Rovers are robotic vehicles designed to explore the surface of Mars. They collect data on Martian geology and climate and search for signs of water and life.

    Rovers are robotic vehicles designed to explore the surface of Mars. They collect data on Martian geology and climate and search for signs of water and life.

    Can humans survive on Mars?

    No, Mars has a harsh environment with low atmospheric pressure, extreme cold, and high radiation levels. Efforts are underway to develop technologies, such as life support systems and habitat construction, to support human survival on Mars.

    No, Mars has a harsh environment with low atmospheric pressure, extreme cold, and high radiation levels. Efforts are underway to develop technologies, such as life support systems and habitat construction, to support human survival on Mars.

    What are the main challenges of sending humans to Mars?

    Challenges include radiation exposure during the journey, creating a self-sustaining habitat, developing reliable life support systems, and managing long-term human health in reduced gravity.

    Challenges include radiation exposure during the journey, creating a self-sustaining habitat, developing reliable life support systems, and managing long-term human health in reduced gravity.

    Is there water on Mars?

    Yes, Mars has water, mainly in the form of ice. Water has been detected in polar ice caps, beneath the surface, and as occasional briny liquid flows during warmer seasons.

    Yes, Mars has water, mainly in the form of ice. Water has been detected in polar ice caps, beneath the surface, and as occasional briny liquid flows during warmer seasons.

    Are there signs of life on Mars?

    While no definitive proof has been found, past missions have discovered organic molecules and methane, suggesting the possibility of past or present microbial life.

    While no definitive proof has been found, past missions have discovered organic molecules and methane, suggesting the possibility of past or present microbial life.

    How do we communicate with spacecraft on Mars?

    Communication with Mars spacecraft is achieved using radio waves. NASA and other space agencies use a network of deep space antennas on Earth to send commands and receive data from Mars missions.

    Communication with Mars spacecraft is achieved using radio waves. NASA and other space agencies use a network of deep space antennas on Earth to send commands and receive data from Mars missions.

    What are the different types of missions to Mars?

    Mars missions include orbiters, landers, and rovers. Orbiters study the planet from above, landers touch the surface to conduct experiments, and rovers move across the surface to explore.

    Mars missions include orbiters, landers, and rovers. Orbiters study the planet from above, landers touch the surface to conduct experiments, and rovers move across the surface to explore.

    What is the Perseverance rover, and what is its mission?

    Perseverance is NASA's most recent Mars rover, launched in 2020. Its mission includes searching for signs of ancient life, collecting samples for future return to Earth, and testing technologies for future human missions.

    Perseverance is NASA's most recent Mars rover, launched in 2020. Its mission includes searching for signs of ancient life, collecting samples for future return to Earth, and testing technologies for future human missions.

    How do we protect Mars from contamination by Earth organisms?

    Planetary protection protocols ensure that spacecraft are thoroughly sterilised to prevent contaminating Mars with Earth microbes, which could interfere with the search for native Martian life.

    Planetary protection protocols ensure that spacecraft are thoroughly sterilised to prevent contaminating Mars with Earth microbes, which could interfere with the search for native Martian life.

    When will humans land on Mars?

    Various space agencies and private companies have proposed timelines for crewed Mars missions, with estimates ranging from the 2030s to the 2050s, depending on technological and funding developments.

    Various space agencies and private companies have proposed timelines for crewed Mars missions, with estimates ranging from the 2030s to the 2050s, depending on technological and funding developments.

    Which nation was the first to land on Mars?

    The USSR was the first nation to set foot on Earth with a man-made object. Less than a week after the initial attempt, Mars 2, crashed in November 1971, but Mars 3 successfully landed and was active for 14.5 seconds.

    The USSR was the first nation to set foot on Earth with a man-made object. Less than a week after the initial attempt, Mars 2, crashed in November 1971, but Mars 3 successfully landed and was active for 14.5 seconds.

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    Last updated: 20-05-2025

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    Go Digit General Insurance Limited | Corporate Office Address: Atlantis, 95, 4th B Cross Road, Koramangala Industrial Layout, 5th Block, Bengaluru 560095 | Registered Office Address: 1 to 6 floors, Ananta One (AR One), Pride Hotel Lane, Narveer Tanaji Wadi, Shivaji Nagar, Pune-411005, Maharashtra | Trade logo of Go Digit General Insurance Ltd. displayed above belongs to Go Digit lnfoworks Services Private Limited and is provided and used by Go Digit General Insurance Ltd. under license.

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