do astronauts already explored the planet mars?

Answer 1

Main article: Exploration of Mars

Dozens of spacecraft, including orbiters, landers, and rovers, have been sent to Mars by the Soviet Union, the United States, Europe, and Japan to study the planet's surface, climate, and geography. Roughly two-thirds of all spacecraft destined for Mars have failed in one manner or another before completing or even beginning their missions. Part of this high failure rate can be ascribed to technical problems, but enough have either failed or lost communications for no apparent reason that some researchers half-jokingly speak of an Earth-Mars "Bermuda Triangle", or a Mars Curse, or even a reference made to a "Great Galactic Ghoul" that feeds on Martian spacecraft.[26]

The first successful fly-by mission to Mars was NASA's Mariner 4 launched in 1964. The first successful objects to land on the surface were two Soviet probes from the Mars probe program, launched in 1971, but both lost contact within seconds of landing. Then came the 1975 NASA launches of the Viking program, which consisted of two orbiters, each having a lander. Both landers successfully touched down in 1976 and remained operational for many years. [27]

Following the 1992 failure of NASA's Mars Observer orbiter, they launched the Mars Global Surveyor in 1996. This mission was a complete success, having finished its primary mapping mission in early 2001. Only a month after the launch of the Surveyor, NASA launched the Mars Pathfinder, carrying a robotic exploration vehicle, which landed in the Ares Vallis on Mars. This mission was another big success, and received much publicity, partially due to the many spectacular images that were sent back to Earth. [28]
Artist's concept of the 2001 Mars Odyssey
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Artist's concept of the 2001 Mars Odyssey

Following various failures in the late 90s, in 2001 NASA launched the successful Mars Odyssey orbiter, which is still in orbit as of March 2006. It notably determined that there are significant deposits of water ice in the upper meter or so of Mars' regolith within 30° of the north and south pole.[29]

In 2003, the ESA launched the Mars Express craft consisting of the Mars Express Orbiter and the lander Beagle 2. It was announced in early 2004 that the orbiter detected methane in the atmosphere, which is a critical factor in determining if there is life on Mars. Unfortunately attempts to contact Beagle 2 failed and it was declared lost in early February 2004.[30]

Also in 2003, NASA launched the twin Mars Exploration Rovers named Spirit (MER-A) and Opportunity (MER-B). Both missions landed successfully in January 2004 and have met or exceeded all their targets. Among the most significant science returns has been the conclusive evidence that liquid water existed at some time in the past at both landing sites. Martian dust devils are known to be passing over the Rovers, cleaning their solar panels, and thus extending their lifespan.[31]

On August 12, 2005 the NASA Mars Reconnaissance Orbiter probe was launched toward the planet, to conduct a two-year science survey. The purpose of the mission is to do more studies and prepare the upcoming lander missions. It arrived in orbit on March 10, 2006. The next scheduled mission to Mars is the NASA Phoenix Mars lander, expected to launch in 2007.[32]

Answer 2

NO, the planet thus far has only been explored by satellites and landers (robotic vehicles). The International space station circles the earth 220 miles above. This is the next step to mars exploration. We will use this station as a stepping stone to the moon first. We will try to establish a base on the moon before attempting a man landing on Mars.

Answer 3

It takes a long way to really explore the planet Mars.

Answer 4

See Mars is not a small one to explore
the details that our scientists gathered are remarkable but they arent even enough to prove that life will be supported in Mars

the other exciting thing is scientist could find the water residual deposits on the rocks of mars this might be the siggn of existence of water or any other liquid flowing in this planet millions of years ago

We humans believe that water is the base of life and continuing our exploration who knows there might be life existing even without water dont worry we will come to know about it very soon

Answer 5

No humans have gone to Mars. NASA has been looking at plans to go to Mars since the 1960's but there are many technical hurdles to overcome. The logistics of getting people to Mars and bringing them back is staggering. The most economical flight path would take about 9 months to reach Mars. The explorers would want to stay there for many weeks to months. A fast return might take less time but still be measured in months. The explorers would need to take all the food and supplies they need with them for this one year plus mission. They would need to have life support systems to provide them with air and water for this period. The effects of living in the zero gravity, high radiation space would need to be counter-acted. Redundancy to account for accidents or break-downs needs to be considered. Using today's technologies, a manned mission to Mars is perhaps a couple of decades and many tens of billions of US dollars in the future.

For now we've had to satisfy ourselves with the rather successful robotic missions that have transmitted back a wealth of information.

Answer 6

How do you recommend that we describe what we are able to detect in the previous we detect it? it really is backwards. I also would prefer to understand why such distinctive human beings view this as an 'both/or' project. we've the skills and aspects to do both, and the gap software has yielded some very sensible consequences and economic returns over the perfect 5 many years. as well to, it betrays a lack of analysis with reference to the quite figures in contact. NASA's budget is tiny compared to the quantity of money already being spent on 'reducing human suffering'. seem up the allocation of the US Federal budget some time and also you'll see merely how little NASA receives compared to different issues. the way some human beings whinge you would imagine NASA merely loaded a spacecraft with fifty dollar charges and blasted it into area. area launches will be an glaring and visual rate, yet that does no longer cause them to really tremendous.

Answer 7

Of course, didnt you hear? About two years ago they crash landed on mars and met aliens, then the aliens told them to go back to earth in their space car, but they crashed into the sun by accident.

Answer 8

It does take too long to get there, but we have sent unmanned probes to mars.

Answer 9

Not any astronauts from Earth...

Answer 10

no. the radiation in space would kill them before they reached mars. Oh, and consult a english teacher for grammer lessons please.