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Oort cloud spewing 18 metric tons of gas every second.
On March 13, 1986, the ESA probe, Giotto, had a close encounter - a close encounter with a visitor from the Oort cloud spewing 18 metric tons of gas every second and pouring 30 metric tons of dust from its nucleus. It's name? Comet Halley... And following its trail was one of the world's foremost experts on cometary dust properties - Dr. Jochen Kissel. "Historically comets have always been unusual bodies, as they seemed to appear out of the nothing and also disappear like that. " But the real mystery is the dust.
When Astronomers started analyzing the recent gamma ray burst GRB050509b, they knew right away that they were seeing something very important. This cosmic explosion lasted less than 1/30th of a second, but it provided Astronomers with an X-ray afterglow for the first time ever, and pointed them towards a likely cause: the collision of two Neutron stars, or a neutron star with a black hole.
NASA announced today that it's pressing forward with a new mission to Jupiter called Juno, which will launch no later than 2010. This will be the second of NASA's New Frontiers Programs (the New Horizons Pluto mission will be the first). The $700 million spacecraft will travel to Jupiter, and then orbit the giant planet searching for an ice-rock core, determine the amounts of water and ammonia present in its atmosphere and study its winds and magnetic field.
An international team of researchers have developed a computer program that simulates the growth and expansion of the universe after the Big Bang, including the formation of galaxies, clusters and quasars. The "Millennium Simulation" used 10 billion virtual particles of matter, and traced their movements in a 2 billion light-year cube of space as the universe evolved. This simulated area contained 20 million virtual galaxies, and accounted for Dark energy expanding the Universe, cold dark matter, and regular matter.
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