LIFE ON MARS

                     MARS LIFE EXIST 

Mars( mangal ) 4th planet in our solar system. basically it is called as red planet due to its reddish appearance by iron oxide prevalent on its surface.and it have thin atmosphere contains 95% carbon dioxide, arogon 1.93% ,nitrogen 1.83% ,oxygen 0.146% and carbon mono oxides 0.0557%.

In winter, near the poles temperatures can get down to minus 195 degrees F (minus 125 degrees C). A summer day on Mars may get up to 70 degrees F (20 degrees C) near the equator, but at night the temperature can plummet to about minus 100 degrees F (minus 73 C) it means that mars is hot because of carbon dioxides .

we humans try to find life on mars but first mission was failed in 10 oct. 1960.The NASA in 28 November 1964 it was flyby mission and Closest approach at 01:00:57 UTC on 15 July 1965.
then it started to explore mars. 

we humans always want to explore our surrounding and space from ancient time, after human land on moon it become a craze to go to mars.and human try alot for it.
human launched one of best mission is curiosity. by NASA 





INDIA become world first country to get success in first time and become first country which made shuttle in just 450 cores (73 million US dollar ) only. and Asia first country to get success in mars mission. 

LIFE ON MARS

There were also indications that Mars might have ice under the surface in some places and may once have had a magnetic field. Subsequent missions gradually built up a picture of a planet that was once not unlike our own 3.8 billion years ago. The data gathered suggested that the Red Planet might once have had a thicker atmosphere as well as lakes and oceans.

The prospect of it still being there is slim but not impossible.

For there to be life, there needs to be liquid water. Evidence for that has been growing and earlier this week Nasa seemed to have the the strongest evidence yet that some is still there - albeit in small amounts.

Fifteen years ago, Nasa discovered gullies inside craters and on slopes. It looked like they might have been caused by running water. But the temperatures are below freezing so many dismissed the idea.

Scientists then noticed that these features increased and decreased over a period of a few months, so whatever was causing the gullies was happening now.

The latest study reported earlier this week has found evidence of different kinds of salts in dark streaks on the slopes of peaks and crater walls. That's important because salt can melt ice - enabling it to flow.

The discovery confirms that the Red Planet is still geologically active and, tantalisingly, it increases the possibility that it may currently harbour simple living organisms.

Current life on Mars is a remote possibility because Mars is harsh, dry and bombarded with radiation, but it is a prospect that will whet the appetite of those planning future missions to a world that becomes more intriguing with each new set of results.

Prof Andrew Coates, who is deputy director of the Mullard Space Science Laboratory at University College London, says: "It was a good time for life on Mars to have developed 3.8 billion years ago, which was about the time that life was starting on Earth. But then conditions changed which could have killed it off.

"But life is tenacious and once it has a foothold it is able to survive extreme conditions."

Scientists can’t be sure what is causing the spikes, but it is possible that it could be very small, bacteria-like living organisms.

If the gas is coming from living microbes then it would mark one of the biggest discoveries in history. On Earth, 95% of methane comes from microbial organisms, but there are many non-biological processes that can also generate the gas.

Scientists have said that the rover now has to test and re-test the possibility of life, ahead of an unmanned mission in 2020 that would look for the source of the methane.

HUMAN ON MARS

NASA is developing the capabilities needed to send humans to an asteroid by 2025 and Mars in the 2030s – goals outlined in the bipartisan NASA Authorization Act of 2010 and in the U.S. National Space Policy, also issued in 2010.

Mars is a rich destination for scientific discovery and robotic and human exploration as we expand our presence into the solar system. Its formation and evolution are comparable to Earth, helping us learn more about our own planet’s history and future. Mars had conditions suitable for life in its past. Future exploration could uncover evidence of life, answering one of the fundamental mysteries of the cosmos: Does life exist beyond Earth?

While robotic explorers have studied Mars for more than 40 years, NASA’s path for the human exploration of Mars begins in low-Earth orbit aboard the International Space Station. Astronauts on the orbiting laboratory are helping us prove many of the technologies and communications systems needed for human missions to deep space, including Mars. The space station also advances our understanding of how the body changes in space and how to protect astronaut health.

Our next step is deep space, where NASA will send a robotic mission to capture and redirect an asteroid to orbit the moon. Astronauts aboard the Orion spacecraft will explore the asteroid in the 2020s, returning to Earth with samples. This experience in human spaceflight beyond low-Earth orbit will help NASA test new systems and capabilities, such as Solar Electric Propulsion, which we’ll need to send cargo as part of human missions to Mars. Beginning in FY 2018, NASA’s powerful Space Launch System rocket will enable these “proving ground” missions to test new capabilities. Human missions to Mars will rely on Orion and an evolved version of SLS that will be the most powerful launch vehicle ever flown.

A fleet of robotic spacecraft and rovers already are on and around Mars, dramatically increasing our knowledge about the Red Planet and paving the way for future human explorers. The Mars Science Laboratory Curiosity rover measured radiation on the way to Mars and is sending back radiation data from the surface. This data will help us plan how to protect the astronauts who will explore Mars. Future missions like the Mars 2020 rover, seeking signs of past life, also will demonstrate new technologies that could help astronauts survive on Mars.

Engineers and scientists around the country are working hard to develop the technologies astronauts will use to one day live and work on Mars, and safely return home from the next giant leap for humanity. NASA also is a leader in a Global Exploration Roadmap, working with international partners and the U.S. commercial space industry on a coordinated expansion of human presence into the solar system, with human missions to the surface of Mars as the driving goal.

THANK U FOR VIEW