Updated August 11, 2018 22:19:15

A last-minute technical problem on Saturday delayed NASA’s unprecedented flight to the sun.

Key points:

  • The probe is named after Eugene Parker, who predicted the existence of solar wind 60 years ago
  • Mr Parker was among the crowd gathered to watch the launch
  • The $2 million mission is already one week behind schedule

The early morning launch countdown was halted with just one minute, 55 seconds remaining, keeping the Delta IV rocket on its pad with the Parker Solar Probe.

Rocket maker United Launch Alliance said it would try again on Sunday (local time), provided the helium pressure issue can be resolved quickly.

As soon as the red pressure alarm for the gaseous helium system went off, a launch controller ordered, “Hold, hold, hold”.

Once on its way, the Parker probe will venture closer to our star than any other spacecraft.

The $US1.5 billion ($2.05 billion) mission is already a week late because of rocket issues.

Saturday’s launch attempt encountered a series of snags; in the end, controllers ran out of time.

Thousands of spectators gathered in the middle of the night to witness the launch, including the University of Chicago astrophysicist for whom the spacecraft is named.

Eugene Parker predicted the existence of solar winds 60 years ago.

He is now 91 and eager to see the solar probe soar.

He plans to stick around at least another few days.

AP

Topics: science-and-technology, stars, astronomy-space, space-exploration, spacecraft, united-states

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p class=”published”> First posted August 11, 2018 21:20:45

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