Bandyopadhay, Amalendu2012-03-082012-03-082011-02-26http://hdl.handle.net/11007/914In the 20 years of its functioning, the Hubble Space Telescope has revealed hitherto unknown secrets.enHubble Space TelescopeSpace shuttleOrigin of the planWhirpool galaxyDefects in the HSTSolar-cell wingsDark matterDark energyArticle