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Posts Tagged ‘Saturn’
Cassini Detected the Rings of Rhea
Written by admin on March 07, 2008 under News | View Comments
PASADENA, Calif. – New observations made by NASA’s Cassini spacecraft suggest that Rhea, the second-largest moon of Saturn, may have rings. If the rings were confirmed, it would be the first moon to have a ring system around it.
The Cassini spacecraft had detected a large debris disk which appeared to be like rings around the 950-mile-wide moon Rhea. Scientists firmly believe that the discs are composed of particles ranging from the size of pebbles to big rocks.
In contrast to the rings around Jupiter, Saturn, Uranus and Neptune, the alleged arcs around Rhea remain invisible and cannot be seen directly. Scientists confirmed the existence of arcs based on the measurements made by Cassini, which detected a fall in electrons on both sides of the moon, indicating that the existence of rings was absorbing the electrons.
This is an artist concept of the ring of debris that may orbit Saturn’s second-largest moon, Rhea. The suggested disk of solid material is exaggerated in density here for clarity.
Credit: NASA/JPL/JHUAPL
It’s uncertain that when the rings would have originated, one thing is certain that they originated as a result of a collision of an asteroid or comet which took place long ago that disgorged the debris around Rhea.
New Solar System Found
Written by admin on February 21, 2008 under News | View Comments
New York – Astronomers along with amateur stargazers have found a solar system, which closely resembles that of our own, using an uncommon technique and say that it can be a novel and more productive technique to search the universe for planets and life.
They said that the new technique known as microlensing is very promising and can be used for many more stars with earth like Stars revolving around them.
Scott Gaudi, who led the study, said “We discovered a new solar system that appears similar to the solar system in which we live”
Titan’s Oil Resources
Written by admin on February 20, 2008 under News | View Comments
Paris – Scientists have discovered immense oil resources in Titan, which is a moon of Saturn. The oil reserve of Titan is estimated to be several hundred times greater than that of earth.
An artist’s imagination of hydrocarbon pools, icy and rocky terrain on the surface of Saturn’s largest moon Titan.
Credits: Steven Hobbs
The immense reserve is detected at a location which is 1.2 billion kilometers i.e., approximately 750 million miles away from Earth, where average temperature itself will be minus 179 degrees Celsius.
Titan has several hundreds times more liquid hydrocarbons than all the available oil and natural gas reserves on Earth, said the European Space Agency (ESA).
In Titan, the ethane and methane falls from the sky in the form of rain, forming massive lakes and seas. It is believed that complex organic molecules called tholins are responsible for Titan’s oily dunes, said the ESA.
