With space exploration gradually progressing, many are wondering whether we should return to the Moon first or attempt a landing on Mars. Some refer to this as the “Moon First” debate. This debate took new shape and importance in July of 2009, on the 40th anniversary of the 1969 moon landing by Buzz Aldrin and Neil Armstrong. They, and many other Apollo astronauts, argued – during this 40th anniversary celebratory period – that they would rather see human society push on to Mars than return to the moon. Their principal argument was that it was simply more inspiring, and a greater “frontier” for human exploration than a return trip to the Moon. They even extended this argument, based on their experience following the Moon landing, saying that a mission to Mars could help unify humankind and soften conflicts around the world – at a time when tensions and animosities internationally are fairly high. But, opponents make fairly compelling arguments as well, typically along the lines of a mission to mars being far more risky and expensive (and, at a time of financial difficulties). There are also practical challenges, such as how to keep humans on Mars for multiple months and safe from deep-space solar radiation. The weight of the supplies for such a long journey and the risks of bone-loss during the long weightless journey are also concerns that create major technical, practical, and economic barriers. But, as the former Apollo astronauts argue, these challenges are no greater in the modern era than those that faced NASA’s moon mission in the less-technically-advanced 1960s. And, they ask, is it not the human spirit to take-on these challenges, instead of shrinking from them? These and other arguments are broken-down below.
Humans were last present on the Moon’s surface in 1972. That was a long time ago. With all the major advances in technology that have taken place since then, it is time that humans return to the Moon’s surface. This is almost an issue of simply asserting that, in the many decades that have passed, the task of returning to the Moon can be done again, and with much greater ease than in 1972.
“I’m unapologetic in my belief that the primary reason we should go back to the Moon is because, as humans, it’s what we do. We explore, we investigate and ultimately, we establish a foothold.”
The idea that returning to the Moon is not inspiring is hard to take seriously. The idea of putting a human being on a planet foreign to the Earth is fundamentally exciting and inspiring.
Returning to the Moon will re-kindle many of the same positive feelings felt by Americans and humans around the world when the Apollo astronauts went to the Moon. And why shouldn’t it? Going to the moon is going to the Moon. It’s an excitand creating and inspiring prospect at all times in human history.
Staying for a longer period of time on the Moon, or possibly creating a Moonbase would be different than the initial trips to the moon between 1969 and 1972, and would be very exciting and inspirational. Having a human or a small group of individuals subsequently live on the moon would be even more inspiring, as humans would look up to the Moon every night and contemplate their common humanity with those living on the Moon. In general, it is possible for humans to design the next trip to the Moon in ways that are very distinct from the Apollo trips, adventurous, new, and inspiring.
There is no reason humans have to pick between going to the Moon and going to Mars? It is not a one-or-the-other question. We can go both back to the Moon and on to Mars. This is the general proposal put forward by George W. Bush and President Obama, calling for a return to the Moon around 2020 and pushing on to Mars in the mid 1930s. So, as much as the debate is splitting hairs about one “or” the other, this is a false dichotomy. Humans can go both to the Moon and on to Mars.
“By refocusing our space program on Mars for America’s future, we can restore the sense of wonder and adventure in space exploration that we knew in the summer of 1969.”
“Our children are raised in a world without heroes. They are led to believe that heroism consists of throwing a football the furthest, getting the most hang time during a slam dunk, or selling the most movie tickets with your looks and your boyish charm. […] Going to Mars is not a luxury we can’t afford. It’s a necessity we can’t afford to be without. We need this. […] We need this, or some kind of challenge like it, to bring us together to all feel a part of something and to have heroes again.”
Going back to the moon is not an inspiring feet, as it only archives what was already achieved in 1969, over 40 years ago. This does not provide a sense of progress, but rather a sense of stagnation. Going to Mars offers a sense of progress, and the broadening of achievable Horizons. In this sense, only going to Mars really scratches the human will to explore new territories, and break down boundaries. Returning to the Moon does not.
Buzz Aldrin said, on the 40th anniversary of the 1969 moon landing in July 2009, that a return mission to the Moon would be only a, “glorified rehash of what we did 40 years ago.”
“The only good reason to send people to Mars would be to make their mission a dedicated, focused search for life on the Red Planet. […] Why? Because, at the end of the day, all this space stuff, it’s all about Life. […] As a species we are fascinated by Life. We are driven, with a ferocious, insatiable hunger, to learn all we can about its origins and fate, strengths and frailties, limitations and possibilities.”
“We ought to gather the international community and go to Mars. I know it isn’t how others feel because it is much cheaper to go back to the Moon but I would rather we went to Mars. If we did it with all those other countries it would have a tremendously unifying effect on the Earth. It would be an inspiration for all people on Earth.”
The world is ensnared in a number of major conflicts and challenges at present. Some label the rift between the Islamic world and the West and a “clash of civilizations”. An inspiring mission to Mars can help soften our attitudes to other humans and resolve these conflicts. A mission to the Moon cannot do so as well, and such a mission would delay the pacifying effect of a mission to Mars. But, this should not be delayed.
In 1999, a Mars orbiter, which is an unmanned craft designed to collect data, crashed down to the surface of Mars when trying to land. This error was made largely because of one minor error by the craft’s engineers.  This spacecraft freefell to the surface of Mars where it crashed and exploded into pieces that now litter the Martian landscape. If only one error caused an unmanned craft to fail, resulting in the $125 million craft being lost, a manned mission would appear to be unsafe. If we allowed any actual human beings go to Mars, the human error possibilities are multiplied by many factors.
“NASA needs to come up with solutions for effectively protecting the astronauts from the high levels of cosmic radiation they will be exposed to in deep space and on the surface of Mars. They will also need medical equipment for the diagnosis and treatment of illnesses or injuries.”
“Astronauts returning from missions in space may take months to start recovering from dangerous bone-thinning. Living in conditions of near zero-gravity places less stress on bones, and in response, they weaken. This thinning could mean that astronauts are vulnerable to bone fractures.” Also because of the lack of work done by the muscles during long durations of weightlessness, the human heart weakens very much from underuse which could endanger a long-term space mission by far.
“Hazards of entering into the Martian atmosphere. Entry into the Martian atmosphere is a crucial stage of the mission and represents a massive obstacle to its success. Various factors—such as the density of the Martian atmosphere, a sandstorm, an outcrop of rock, the spacecraft’s speed, a faulty trajectory, a lack of fuel, or an electronic glitch—could jeopardize a mission. Many missions have, in fact, failed at this stage.”
“First, on a mission to the Moon, Earth rescue is a decent possibility for certain kinds of failures. On a trip to Mars, this would be out of the question. As NASA is finding out with its shuttle return to flight efforts, having a standby rescue ship and a space station to go to makes failure recovery for many failures feasible without too much increased capability from our existing hardware.”
“In some ways, the moon will be harder than Mars. Moon dust is much more abrasive than Mars dust; Mars has atmosphere; Mars has more gravity (one-third of Earth’s); Mars has plenty of ice for a potential water supply, while the moon may have some, but probably not very much.”
Radiation only becomes dangerous when absorbed in large quantities, over short periods of time. According to the National Academy of Sciences National Research Council, a dose of 100 rem causes a 1.81% increase in the likelihood of cancer in the next 30 years of a person’s life. Astronauts inside a spaceship during any of the last 3 large recorded solar flares would have experienced doses of 38 rem; inside of the storm shelter – 8 rem. On the surface of Mars, which offers much radiation protection due to its atmosphere, the unshielded dose would have been 10 rem, the shielded dose 3 rem. In total, radiation doses of 52.0 and 58.4 rem taken on the missions, are well below dangerous thresholds — even were they to come all at once. 
The problem of zero gravity during the trip to Mars is actually not a problem at all: zero-gravity conditions can be eliminated altogether during the trip, as artificial gravity can be created through the use of centrifugal force. Furthermore, we should take into account the Mir cosmonauts, Sergei Avdev spending a total of 748 days in zero-gravity over 3 missions, and Valeri Polyakov spending 438 consecutive days without gravity. There were no long term negative impact, having no reason to believe that zero gravity causes health problems. 
“When we compare our moon to Mars, we see that Mars is much easier to terraform then the Moon. The moon’s 28 day day-night cycle is unsupportable for plants and isn’t comfortable for humans either. Plant growth on a greenhouse on the moon wouldn’t be possible either: solar radiation would destroy them and if the greenhouse was made to shield the solar radiation ( a very thick greenhouse ), the temperature differences would kill the plants: Much too hot during day-time, much too cold during the night.”
Estimates by NASA’s top scientists conclude that the travel-time to get to Mars is about 2-3 months one way, which equals out to 4-6 months round trip.
“If anything goes wrong, we’re done for”. Simple as that… If anything happens like Apollo 1, that killed astronauts during a test run, inspiration will be plumet for the human race and NASA missions will suffer major financial and p.r. setbacks. With the danger of “Mar missions” being a lot higher than any other thing humans have attempted in space, inspiration, hope, and joy for the human race will be in severe danger because of a huge change that something can go wrong resulting in the termination of the mission or the loss of astronaut lives.
The Apollo missions crammed as much food as possible to keep the astronauts alive and it ended up that even freeze-dried food is heavy. It costs about $35,000 per pound to send things into space (non-living) which would also be incredible food costs for just one mission.
Because long periods of weighlessness deteriorates astronaut’s bones, a “Space Shuttle” to Mars must make room for special exercise equipment and enough extra air for this exercising. Without this equipment astronauts could be dead from underwork by the time they get to Mars in the 2-3 months it takes to get there.
We would at least have to have a human orbit Mars for an extended period of time and come back healthy for any thought of a Mars landing to be even plausible! Or, at a minimum, we would need to send a human half way to Mars, to study the effects on the human body, before sending humans the entire distance – not mention making a landing.
“The 20-minute communications lag. Another difficulty is the communications lag between Earth and a spacecraft travelling to Mars. Depending on the distance between the two, it can take almost 20 minutes to send commands, and then another 20 minutes before a response is received. Scientists must react quickly when problems arise, and then wait with great patience for the response, which will arrive 40 minutes after they send the initial signal. This also means that robots and systems we send to Mars must be able to make some of their own decisions, or at least know to wait for a command if something is not right.”
During the “Space Race” in the 1960s and 70s the US (as well as other countries) had to start from scratch. Nothing about space habitation, transportation, or interaction has been put together of any sort. NASA had a system to allow for a continuous progression of space knowledge with the Mercury, Gemini, and then Apollo missions. This progressive system allowed for the adaptation and streamlining of the process of eventually landing on the Moon.
The idea that humans are somehow not yet prepared to go to Mars, and that we need more preparation and practice (by again going to the Moon, or through some other process), ignores the fact that going to the Moon was a monumental challenge in 1969, and yet we did it. Going to Mars now is an equivalent challenge to going to the Moon in 1969. It’s a challenge, but we can do it.
“This idea that you have to know how to do it before you can commit yourself to the program is completely false. We didn’t know that we could do Lewis and Clark successfully before we set them out [to explore the American West in the 1800s].”
“There are additional reasons to send humans to Mars. Nations, like people, thrive on challenge; they languish without it. The space program needs a challenge. Consider these statistics: Between 1961 and 1973, with the impetus of the moon race, NASA produced technological innovations at a rate several orders of magnitude greater than that it has shown since. Even so, NASA’s average budget in real dollars then was only about 20 percent more than today ($16 billion 1998 dollars compared with $13 billion). Why the enhanced productivity? Because NASA had a goal that forced its reach to exceed its grasp. Far from being a waste of money, having NASA take on the challenge of a manned mission to Mars is the key to giving the nation a real return for its space dollars.”
“But reaching Mars is a bit easier thanks to Earth’s rotation around the sun. As a rocket escapes Earth to reach another object in space, Earth gives it an extra speed because of its 30 km/sec orbital speed. When we try to reach Mars we profit from this effect, but when we reached the moon, we don’t.”
In the scope of research and the gathering of information, Humans have only barely begun to actually study the moon from a scientific perspective. If you are going to do some sort of research or study, the moon is obviously the more logical thing to do is study the Moon because it is much closer and would allow for the easiest, safest, and quickest method of transport of human beings as well as scientific data and evidence because of it’s proximity to the Earth. Many things on planet earth are influenced by the moon and having us physically studied it so little it only seems proper and logical to deal with the Moon first and Mars later.
“We need to go back to the Moon, we need to learn a little bit more about what we think we know already.”
“The exploration of the Moon is maybe best compared with the expeditions to Antarctica. They are both uncompromising, extreme environments that, at first, would appear to have little to offer to human advancement. As it’s turned out, Antarctica has proved to be vital for scientific discovery. It has taught us about our atmosphere, oceans and climate. 18th and 19th century explorers were desperate to discover that last continent – in the 21st century the Moon provides an even greater challenge.”
Since the Moon does affect the Earth more directly and strongly than the planet Mars, wouldn’t it be most logical to study the object with the most impact first. We have barely scratched the surface (literally and figuratively) of Moon research and something that affects the Earth in such a great magnitude should most defintely researched thoroughly before other celestial bodies such as the planet Mars.
“Sometimes I think I flew to the wrong place. Mars was always my favourite as a kid and it still is today.”
“Exploring and colonizing Mars can bring us new scientific understanding of climate change, of how planet-wide processes can make a warm and wet world into a barren landscape.”
“Exploring and colonizing Mars can bring us new scientific understanding of […] how planet-wide processes can make a warm and wet world into a barren landscape. By exploring and understanding Mars, we may gain key insights into the past and future of our own world.”
“Just as Mars — a desert planet — gives us insights into global climate change on Earth, the promise awaits for bringing back to life portions of the Red Planet through the application of Earth Science to its similar chemistry, possibly reawakening its life-bearing potential.”
“The first manned landing on Mars would serve as an invitation to adventure for children around the world. There will be some 100 million kids in the U.S. schools over the next 10 years. If a Mars program were to inspire just an additional 1 percent of them to pursue scientific educations, the net result would be one million more scientists, engineers, inventors, medical researchers and doctors.”