News tagged with extrasolar planetary systems

Nearing one thousand exoplanets

A quiet milestone in modern astronomy may soon come to pass. As of today, The Extrasolar Planets Encyclopedia lists a current tally of 998 extrasolar planets across 759 planetary systems. And although various tabulations ...

dateOct 21, 2013 in Astronomy
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How common are earth-moon planetary systems?

Sebastian Elser, Prof. Ben Moore and Dr. Joachim Stadel of the University of Zurich, Switzerland, in cooperation with Ryuji Morishima of NASA's Jet Propulsion Laboratory, tried to estimate how common Earth-Moon planetary ...

dateSep 18, 2011 in Astronomy
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