The Giant Megalodon Mega-Shark May Have Been Even Bigger Than We Thought

Two giant icy balls in space could change our understanding of stars

NASA mission to get up close with giant Jupiter moon

NASA's Juno to get a close look at Jupiter's moon Ganymede. The first of the gas-giant orbiter's back-to-back flybys will provide a close encounter with the massive moon after over 20 years.