( CNN ) Launching rockets is a complicated thing . Landing them upright on a platform floating in the ocean ? Well , that 's never been done before . SpaceX , the private space exploration company founded by billionaire Elon Musk , hopes to give it a try . But weather forced it to scrub Monday 's plan to launch . SpaceX said on Twitter that Tuesday at 4:10 p.m . ET will be the next opportunity for the company to launch a two-stage Falcon 9 rocket carrying an uncrewed cargo spacecraft called Dragon on a flight from Cape Canaveral , Florida , to the International Space Station . That will be the easy part . After the launch , SpaceX will try to guide the bottom stage of the rocket upright onto a platform , or what it calls an autonomous spaceport drone ship , in the Atlantic Ocean off Florida . Usually booster rockets burn up in Earth 's atmosphere or , like NASA 's space shuttle boosters , they fall back into the ocean . So why try to land one ? Musk wants to cut costs . On his company 's website , he says that if anyone can figure out how to `` reuse rockets just like airplanes , the cost of access to space will be reduced by as much as a factor of a hundred . '' SpaceX tried to land a Falcon 9 on the drone ship in January , but the rocket hit at an angle and exploded . The company has previously said the odds of a successful landing are about 50 % . If you want to see how it goes , it will post photos online throughout the mission and will put video on YouTube . And if the landing does n't work ? SpaceX says it will keep trying and , after it masters landing at sea , hopes to someday land rockets on the ground . What about the rest of the rocket and the Dragon ? The smaller , top part of the rocket will carry the Dragon into orbit and then break away from the cargo ship and burn up in Earth 's atmosphere . The Dragon will dock with the space station a couple of days after launch to deliver more than 4,300 pounds ( 1,950 kilograms ) of supplies , including research equipment and ISSpresso , an espresso maker that astronauts can use to make coffee and tea . The space station crew will spend about five weeks unpacking the Dragon . They 'll then stuff it with over 3,000 pounds of science experiments , trash and other stuff to send back to Earth . When they 're done , Dragon will leave the space station and mission controllers will guide it to splashdown in the Pacific Ocean off California . This is the sixth SpaceX mission to the International Space Station . The company was the first private space contractor to dock with the station . CNN 's Catherine E. Shoichet contributed to this report .
SpaceX says weather forced it to delay its rocket launch plan . The company is now aiming for a May 22 liftoff from Cape Canaveral Air Force Station in Florida with the Falcon Heavy rocket.