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Click here if this e-mail doesn't display properly Detection of two Earth-sized exoplanets The discovery of two Earth-size planets orbiting a Sun-like star called Kepler-20 is reported online this week by Nature. The paper describes observations made by the Kepler spacecraft and methods used to determine that the signals detected are planets. Moreover, the researchers go on to predict that these planets are rocky, with possible Earth-like compositions. Access the article online.     Digg    Facebook    LinkedIn    StumbleUpon    Twitter     Google+ As a registered user of Nature Publishing Group's Web sites, our database indicates that you have opted-in to receive product information and special offers. If you no longer wish to receive these e-mails or to discontinue all e-mail services from Nature Publishing Group please update your online account. Modify My Account (Log in to be recognised as a Nature.com registrant). For further information on technical assistance | print subscriptions | other enquiries. Nature Publishing Group | Principal offices: London | New York | Tokyo. Worldwide offices: Basingstoke | Boston | Buenos Aires | Delhi | Hong Kong | Madrid | Melbourne | Munich | Paris | San Francisco | Seoul | Washington DC. Macmillan Publishers Limited is a company incorporated in England & Wales under company number 785998 & whose registered office is located at Brunel Road, Houndmills, Basingstoke, Hampshire RG21 6XS. Nature Publishing Group | 75 Varick St Fl 9 | New York | NY 10013-1917 | USA © 2011 Nature Publishing Group, a division of Macmillan Publishers Limited. All rights reserved.