2 US astronauts arrive at launch pad for SpaceX launch

 With thunderstorms and the possibility of tornadoes threatening a delay, two NASA astronauts climbed aboard a SpaceX rocket ship Wednesday for liftoff on a history-making flight that was seen as a giant leap forward for the booming business of commercial space travel.

With thunderstorms and the possibility of tornadoes threatening a delay, two NASA astronauts climbed aboard a SpaceX rocket ship Wednesday for liftoff on a history-making flight that was seen as a giant leap forward for the booming business of commercial space travel.

Space veterans Doug Hurley and Bob Behnken were scheduled to ride into orbit aboard the brand-new Dragon capsule on top of a Falcon 9 rocket, taking off for the International Space Station at 4:33 p.m. EDT from the same launch pad used by the Apollo moon missions a half-century ago.

Smiling, waving and giving the traditional thumbs-up as Vice President Mike Pence looked on, the two men said farewell to their families - exchanging blown kisses and pantomiming hugs for their young sons from a coronavirus-safe distance - before setting out for the pad in a gull-wing Tesla SUV, another product from SpaceX's visionary founder, Elon Musk.

Thunder could be heard rumbling as the convoy of vehicles made its way toward the rocket. And a tornado warning was issued moments after the astronauts climbed into their capsule.

The flight would mark the first time a private company sent humans into orbit.

It would also be the first time in nearly a decade that the United States launched astronauts into orbit from U.S. soil. Ever since the space shuttle was retired in 2011, NASA has relied on Russian spaceships launched from Kazakhstan to take U.S. astronauts to and from the space station.

With 2 1/2 hours to go before liftoff, controllers put the chances of launch at just 40 percent because of thunderstorms at NASA's Kennedy Space Center. In the event of a postponement, the next launch opportunity would be Saturday.

The preparations took place in the shadow of the coronavirus outbreak that has killed an estimated 100,000 Americans.

"We're launching American astronauts on American rockets from American soil. We haven't done this really since 2011, so this is a unique moment in time," NASA Administrator Jim Bridenstine said.

With this launch, he said, "everybody can look up and say, 'Look, the future is so much brighter than the present.' And I really hope that this is an inspiration to the world."

Musk, wearing a mask and keeping his distance, chatted with the two NASA astronauts just before they left for the launch pad. The mission would put Musk and SpaceX in the same league as only three countries - Russia, the U.S. and China, which sent astronauts into orbit in that order.

NASA pushed ahead with the launch despite the viral outbreak but asked spectators to stay at home. Still, beaches and parks along Florida's Space Coast are open again, and hours before the launch, cars and RVs already were lining the causeway in Cape Canaveral.

President Donald Trump also planned to fly in for the liftoff at Kennedy, where the guest list was extremely limited because of the pandemic.

Among the sightseers was Erin Gatz, who came prepared for both rain and pandemic. Accompanied by her 14-year-old daughter and 12-year-old son, she brought face masks and a small tent to protect against the elements.

She said the children had faint memories of watching in person one of the last shuttle launches almost a decade ago when they were preschoolers.

"I wanted them to see the flip side and get to see the next era of space travel," said Gatz, who lives in Deltona, Florida. "It's exciting and hopeful."

Hurley, 53, and Behnken, 49, are both two-time shuttle fliers.

NASA hired SpaceX and Boeing in 2014 to transport astronauts to the space station in a new kind of public-private partnership.. Development of SpaceX's Dragon and Boeing's Starliner capsules took longer than expected, however. Boeing's craft is not expected to fly astronauts into space until early 2021.

"We're doing it differently than we've ever done it before," Bridenstine said. "We're transforming how we do spaceflight in the future."