Whether it’s exploring space, conquering an athlete’s inner limits or discovering a new continent, Greek Oscar-winning composer Vangelis has made the music to match. The top-selling artist, who has an asteroid between Jupiter and Mars named after him, has merged his love of music, space and mythology in an ode to the 2001 NASA mission to Mars. Vangelis, who won an Academy Award for his theme to “Chariots of Fire,” performed his new choral symphony Mythodea amid the ruins of the temple of Zeus in central Athens last week to an audience of thousands.