The launch was scheduled for early today, but after several shifts in timing, the space agency announced it was scrubbing it, due to a violation of a launch limit. Unfortunately, we didn't have enough time this evening to go troubleshoot that and try again for a launch.
The launch is now planned for Sunday, Aug. 12 at 3:31a.m EDT from Space Launch Complex-37 at Cape Canaveral Air Force Station. Forecasters are predicting a 60 percent chance of acceptable weather.
With just one minute, 55 seconds remaining for NASA's Parker Solar Probe to lift off, the launch controller shouted, "Hold, hold, hold".
Scientists also hope the probe can help them to answer why the corona, the outermost layer of the sun's atmosphere, is 300 times hotter than its surface.
The probe will help scientists understand more about the nature of the sun by taking measurements of solar winds, a flow of ionised gases.More news: Ford unveils 2019 NASCAR Mustang
The probe is protected by an ultra-powerful heat shield that is 4.5 inches (11.43 centimeters) thick. The $1.5 million mission is already a week late because of rocket issues.
On each close approach to the sun, the probe will sample the solar wind, study the sun's corona, and provide close-up observations from around the star.
"We are ready. We have the flawless payload".
The probe is named after Gene Parker, who in 1958 wrote a paper theorizing the expansion of the solar atmosphere and solar wind.
Parker, now 91, recalled that at first some people did not believe in his theory.More news: Paul Pogba Named Manchester United Captain - Starting XI V Leicester Confirmed
The first-ever spacecraft to fly directly towards the Sun was poised to blast off on Saturday on a mission to plunge into our star's sizzling atmosphere and unlock the mysteries of the centre of the solar system.
"It was just a matter of sitting out the deniers for four years until the Venus Mariner 2 spacecraft showed that, by golly, there was a solar wind", Parker said earlier this week.
Tools on board will measure high-energy particles associated with flares and coronal mass ejections, as well as the changing magnetic field around the Sun.
If it launches successfully at the same time on Sunday, the probe will reach speeds of up to 430,000 miles per hour (700,000 km/h).
The probe is about the size of a small auto and weighs a mere 635 kg.More news: Gary Woodland sets PGA Championship record before storm suspends play