The Cassini spacecraft has recorded jets of water
ice on several flights near the surface of Saturn's moon, Enceladus, which may
indicate a favorable habitat for the existence of life.
These geysers, which arise through cracks in the icy surface of Saturn's sixth
moon, could reveal the existence of a vast underground sea.
"Cassini has flown several times through these particles and analyzed. We
found that apart from water and organic material, there is salt in the particles
of ice. Salinity is the same as that existing in the oceans of the Earth"
Porco said.
The scientist said that "sounds like a crazy thing" but it could be
like "if nevus on the surface of this little world," referring to the
conditions given in this satellite favorable to microbial life.
"Ultimately, this is the most promising known for research in
astrobiology. We need not even scratch the surface. Just fly between these
columns of particles. Or we positrons on the surface and take samples," he
said.
The Cassini probe, launched in 1997, is a mission involving NASA, the European
Space Agency (ESA) and the Italian Space Agency which aims to study climate
change on Saturn and its moons.
Last year, NASA decided to extend the mission, which has been transmitting
information in the Saturn system for almost six years until 2017.
"The type of ecosystem that Enceladus may harbor could be like those in
the depths of our planet. Although everything takes place entirely in the
absence of sunlight," he said.
Cassini was launched into space in October 1997 together with ESA's Huygens
probe, and reached the vicinity of Saturn in 2004 to begin the study of Titan,
the largest moon of the planet.
No comments:
Post a Comment