An unmanned rocket owned by privately held Space Exploration
Technologies blasted off from Cape Canaveral Air Force Station on
Tuesday on the first commercial flight to the International Space
Station.
The 178-foot (54-meter) tall Falcon 9 rocket lifted
off at 3:44 a.m. (0744 GMT) from a refurbished launch pad just south of
where NASA launched its now-retired space shuttles.
Less than
10 minutes later, the rocket delivered its cargo - a Dragon capsule
with 1,200 pounds (544 kg) of supplies for the station crew - into
orbit.
"Feels like a giant weight just came off my back,"
company founder and chief executive Elon Musk posted on Twitter after
Dragon deployed its solar panels, the first of several key milestones
that must be met before the spacecraft is cleared to dock at the
station.
"Every launch into space is a thrilling event, but
this one is especially exciting because it represents the potential of a
new era in American spaceflight," John Holdren, President Barack
Obama's chief science adviser, said in a statement.
NASA is
counting on companies like Space Exploration Technologies, or SpaceX, to
take over the task of flying cargo - and eventually astronauts - to the
$100 billion space station, which orbits about 240 miles above Earth.
Currently,
NASA is dependent on Russia to fly crew to the station, at a cost of
more than $60 million per person. Russia, Europe and Japan also fly
cargo to the station.
If its test flight is successful,
SpaceX would become the first private company to reach the space
station, a microgravity research complex for biological, materials,
fluid physics and other science experiments and technology
demonstrations.
The Aerospace Industries Association said the
launch was a milestone for U.S. space flight and showed how
collaborative investments by government and industry could help the
United States remain an important player in space.
"Continuing
collaborative investments in NASA's commercial crew program will be
crucial to ending our dependence on Russia for astronaut launch," said
AIA President Marion Blakey. "This launch, along with other investments
NASA and industry are making, shows that our nation still has the right
stuff."
SpaceX and a second company, Orbital Sciences Corp,
already hold contracts worth a combined $3.5 billion to fly cargo to the
station.
SpaceX also is among four firms vying to build space taxis to fly astronauts, tourists and non-NASA researchers.
Separately,
NASA contributed nearly $400 million to SpaceX's $1.2 billion
commercial space program, which includes development and up to three
test flights of Falcon 9 rockets and Dragon capsules.
The
U.S. Air Force is closely following launch efforts by SpaceX and Orbital
Sciences in hopes of introducing competition to the launches of
national security satellites later this decade. At the moment, most big
military and intelligence satellites are launched into space by United
Launch Alliance, a joint venture of Boeing Co (BA.N) and Lockheed Martin
Corp (LMT.N).
An analysis by the U.S. Government
Accountability Office shows that a similar program under traditional
NASA procurement would have cost four to 10 times as much, said NASA's
Alan Lindenmoyer, who manages the agency's commercial spaceflight
initiatives.
Tuesday's launch followed a last-second cutoff
of Falcon's planned liftoff on Saturday. Engineers later traced the
problem to climbing pressure in an engine chamber due to a faulty purge
valve.
"It looks like we probably could have flown with the
condition," SpaceX president Gwynne Shotwell said. “"Once we separated
from the ground, things would have settled down a bit, but it was still
the right thing to do."
Dragon will take about a day to
reach the space station's orbit. It will then spend another day
practicing maneuvers and testing its communications systems and
navigation aids. If all goes as planned, NASA is expected to clear
Dragon for berthing at the space station on Friday.
“"Everything
is looking really good," Musk told reporters after launch. “I would
count today as a success no matter what happens the rest of the
mission."