OTD…April 25 and the Hubble deploy

#OTD in 1998…The launch of Discovery on final shuttle-Mir docking mission

#OTD in 2009…Endeavour launched to complete the Japanese segment of the International Space Station

The Hubble Space Telescope has again spotted what appear to be towering plumes of water vapor erupting from Jupiter’s moon Europa, hinting that future spacecraft may be able to sample the hidden sea, a possible abode of life, without having to drill through miles of rock-hard ice, researchers said Monday.