NEW : Musk says the interior is roomier than the Soyuz . NEW : Charles Bolden says commercial spaceflight will blossom on its own merits . Dragon is the first private spacecraft to connect to the International Space Station . It is carrying cargo including food and computer equipment .
NEW : Astronaut says the interior is roomier than the Soyuz . NEW : Don Pettit says commercial spaceflight will blossom on its own merits . Dragon is the first private spacecraft to connect to the International Space Station . It is carrying cargo including food and computer equipment .