Tags: space, spacewalk, shuttle, program, astronauts, story, musgrave, left, peterson, float, cargo, earth-orbiting, challenger, april, sts-, mission
Tags: space, nasa, successfully, launched, earth-orbiting, satellites, including, goddards, eighth, orbiting, solar, observatory, aboard, delta, rocket, june, cape, canaveral, florida
Tags: space, nasa, successfully, launched, earth-orbiting, satellites, including, goddards, eighth, orbiting, solar, observatory, aboard, delta, rocket, june, cape, canaveral, florida, designed, high-energy, wavelength, bands, scientists, earth