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Astronomical Science
Esa, Nasa team up on key missions
The US and European space agencies are to co-operate on two missions considered vital for efforts to create a new understanding of the Universe.
Agency chiefs signed official agreements outlining the partnership in a ceremony at the Paris Air Show.
28 new planets found outside solar system
A leading team of planet-seekers has announced the discovery of 28 new planets outside solar system, increasing the number of known exoplanets to 236, at the annual meeting of American Astronomical Society in Honolulu, Monday.
Jason Wright of the University of California, a member of the team, said at the meeting: "Taken together, in the last year our teams have increased the number of known planets by 12 percent and shown that at least 30 percent of stars known to host planets have more than one object orbiting."
The planets are among 37 new objects spotted within the past year. Seven of the objects are failed stars called brown dwarfs, with masses that dwarf the largest, Jupiter-sized planets but too small to sustain the nuclear reactions necessary for stellar ignition.
