Explosion shows space travel ` ` a really tough business , '' NASA official says . Spacecraft , which alone cost over $ 200 million , Orbital Sciences official says . Space station itself is in good shape even without resupply , says official . The spacecraft burst into flames seconds after liftoff ; no injuries are reported .
Explosion shows space travel `` a really tough business , '' NASA official says . Spacecraft , rocket alone cost over $ 200 million , Orbital Sciences exec says . Space station crew is in good shape even without resupply , says official . The spacecraft burst into flames seconds after liftoff ; no injuries are reported .