Weather meant that the agency’s attempt to send the ‘Low Density Supersonic Decelerator’ into space from a balloon

Nasa has had to cancel its third attempt at launching a rocket-powered flying saucer into space.

The company hopes that it can test out the science fiction-looking ship in advance of using it as a way of landing deliveries on Mars. But the tests have been called off a number of times, most recently because rain showers and wind moved hit the Hawaii launch site.

“A line of rain showers developed overnight moving towards the launch site, which result in unstable wind conditions near the surface that would prevent the launch of the balloon,” Nasa spokesperson Kim Newton said in a post about the called-off mission. Nasa said that it would look to launch it again tomorrow.

When the ship does finally launch, it will be carried up on a giant weather balloon to a spot 120,000 feet above Hawaii. It’ll then be carried up another 180,000 feet, carried up by a rocket booster, mimicking the speed it’ll travel during its descent to Mars.

The landing mechanism will then deploy as the ship comes back down to Earth — first the huge balloon in the flying saucer will deflate, and then a parachute will open out.

If that works, scientists hope to adapt the technology for the future Mars missions. That is important because the thin atmosphere on Mars makes it difficult to get to the ground — there’s less air to slow them down, so too often they crash into the ground and can break.

But the LDSD is built to pick up as much air resistance as it can, with its big round shape — similar to a classic UFO — helping to create drag. The extra parachutes help slow it down even more, hopefully landing equipment or even humans on the red planet.