Mars was always known to be the planet where life could be found other than Earth. Now there are more possibilities of life in the Solar System other than Mars. Scientists are exploring the possibility of life on other planets through various expeditions.

Here are certain interesting discoveries made on life on other planets that should be known by all.

Scientists assume Europa, a satellite of Jupiter to support life or other forms of life. It is the fourth largest satellite of Jupiter after Io, Ganymede and Callisto.

Sustainable source of energy and adequate water is the main significance of life. Europa satisfies both counts as in recent days some external terrestrial life forms are discovered by hot openings of the abyssal ocean!

The excessive tidal heat on Europa has the potential to keep the inner layers of the satellite warm enough to have a layer of liquid below the sheath of ice. Hence any living organic creature can move about and connect to one another.

Titan, the largest satellite of The Saturn is another Planetoid considered to show traces of life. The atmosphere mainly consists of nitrogen. It has a surface pressure more than the planet Earth but a temperature too cold to survive. As a result of excessive methane organically rich molecules may be found there.

Traces of Hydrogen Cyanide in the atmosphere shows that the planetoid has grounds for amino synthesis hence it can be speculated that earlier forms of life could be found there. But the temperature of this satellite is too low for life to survive.

In the year 1996, a meteor was discovered in the Allan Hills of Antarctica. After proper examinations, scientists concluded that it was a 4.5 billion year old meteor from Mars which had evidences of life on Mars. It contained some structures like ancient bacteria within the cracks.

In 1997, the Jet Propulsion Laboratory of Pasadena, California had sent a small space-craft like pod on the Mars. This was mainly to examine the terrain of Mars for the sustainability of life. It is like a radio controlled remote car that sends frequent signals to the Earth.

NASA scientists are developing a life detection system, ‘œthe Medusa’ which might have the potential to sense or detect life by simply analyzing external samples like that on the Earth. It will be carried in submarines to the sites deep down in Europa oceans, 30 miles beneath the ice bed.

The systems of Medusa can control the chemical and biological factors in adverse environmental conditions. It has the facility to collect and store samples. It had self-generated power, processor, and data storage capacity and communication modes. It is also endowed with temperature sensors.

Medusa has a special chemical sensor that can check the lights illuminated from any sample. It has the mechanism of simple finger-print identification. Different chemical conditions can be determined by colour changes. Moreover, Medusa has a feature to measure the amount of Carbon 12 or Carbon 13 gases uprising from the ocean bed.

Carbon is the major factor for life on Earth. There are certain creatures on this planet who can survive in adverse conditions with extremely rough temperatures like that in other celestial bodies.