This plane 'accidentally' flew into space before the Moon landing

In 1963, the X-15 Air Force plane ‘accidentally’ went to space.

This happened due to a unique sequence of circumstances.

It’s also something very unlikely to happen again.

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The definition of space

To break down how this pilot went to ‘space’, we need to start by defining what the term actually means.

The conventional definition of the edge of space is the Karman line, named after Theodore von Karman, the aerospace engineer who theorized it.

Von Karman determined that the theoretical limit of altitude for airplane flight is 83.8km (52.1 miles) above Earth.

Anything above that, and it becomes space, not air.

This is where you’re more likely to see one of the Earth’s spectacular phenomena, airglow.

Meanwhile, being beyond this line made a NASA astronaut realize we are ‘living a lie’- here’s why.

A record that preceded the Moon landing

On July 19, 1963, a North American X-15 aircraft operated by the US Air Force in partnership with NASA passed the Karman line and reached space.

The same thing happened one month later, with the same pilot, Joseph Walker, at the ‘helm’.

Crucially, this unique record preceded the 1969 Moon landing by six years.

The X-15 aircraft that set the record

The plane used by NASA and the US Air Force was a North American X-15, an experimental rocket-powered aircraft capable of hypersonic speed.

In 1967, the X-15 achieved a jaw-dropping top speed of Mach 6.7 – equivalent to 16,272km/h (4,520mph).

This is particularly significant for two reasons.

First, this is still a world record, nearly 60 years later.

Second, it means a real plane designed in the 1960s is a lot faster than theoretical concept planes designed in the modern era, such as the Hermeus Halcyon, which is ‘only’ capable of Mach 5.

Food for thought.