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Posts Tagged ‘Solar System’
Mini-Black Hole Is Smallest Ever But Still Strong
Written by admin on April 03, 2008 under News, Technology | View Comments
WASHINGTON – NASA scientists have discovered a black hole, the smallest ever found that weighs approximately four times the mass of our sun and it is 15 miles in diameter.
“This black hole is actually pushing the limits,” said Nikolai Shaposhnikov, the study team leader of NASA. “Scientists were working hard for many years to find out the smallest possible size of a black hole, and this invention is a big step towards answering that question,” he said in a statement.
Though it is smaller, it seems to be stronger than other larger black holes found at the centers of galaxies. If anyone goes nearer to J1650 (the name given to the black hole), its gravity would stretch your body into a “strand of spaghetti,” said Shaposhnikov.
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”
