... Launch of a Delta IV Heavy . ... The Delta IV Heavy is the largest of the Delta series, packing the punch of three rocket boosters instead of the usual one. ... Contemplating the Sky . ... Tonight will be a good one for midnight meditators at many northerly locations as meteors from the Geminids meteor shower will frequently streak through. ... In 1999, Leonids Meteor Shower came to an impressive crescendo. ... The robotic rover Opportunity has chanced across another small crater on Mars. ...