Wednesday , December 2 2020

Virgin Galactic is making history with the first manned space flight: a feat that restores disputes where space begins

The company Virgin Galactic, Richard Branson tycoon made history Thursday, reaching its first manned space flight.

With this feat, the company becomes first to achieve commercial manned space mission.

  • Why is this milestone flight Virgin Galactic (and how long can we go as tourists in space)

Its aim is to bring tourists These space flights, with the cost of USD $ 250,000 a ticket, what could happen in 2019.

The company claims that SpaceShipTwo, which flew from California, manned by two pilots, it reached 82.7 km in height.

The ship managed to this height after takeoff collected on another plane, which looked to continue to grow a 2.9 times faster than sound

"Any specific definition of & # 39 is ArbitrARIowa"He tells BBC Phil Knock, a professor of planetary sciences at Western University in Canada.

But although there is no consensus, and there are some "Tradition"As he calls Alex Heller, professor of space technology at Carleton University in Canada, which serve to guide the response.

invisible line

This explains the National Oceanic and Atmospheric Administration (NOAA, for its acronym in English), "There is no final law really established where national airspace ends and where outer space begins. "

For reference, maximum height above sea level He reached the plane is about 37 km.

Above, the atmosphere starts to become wiredrawn as well as for a conventional aircraft can fly. Air generated less tractionTherefore, vehicles must achieve much higher speeds.

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  • Spacecraft Voyager 2 becomes the second manmade about 39 & #; object which travels outside the solar system

Satellites in Earth orbit is 200 km from the otherwise might not last long.

Below, the atmosphere is too dense and "effect is generated pull"It would have been paid to the surface.

For more missions breathing, satellites have to go far higher, Hubble Space Telescope, for example about 600 kilometers high.


The Hubble Space Telescope's orbit 600 kilometers above the Earth.

One of the most recognized borders, that the world has entered the space is called line with pocket. 100 km above sea level.

Karman line is taken as a reference to the International Aeronautical Federation (FAI), the organization that sets international standards on aviation matters and astronautics.

From that moment, and can not fly in the usual way (with supporting wings or propellers that face) and orbit must not fall.

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"Most people say that the line of pocket constitute a legal unit, which presents the dispute," he tells BBC Eller.

"However, there is no statute of it."

But …

Other institutions, such as the US Air Force and NASA put the rod below.

For them, the space starts 80 km High, that is, about 20 km below the handheld line.

The pilots and other professionals who have been able to fly over those 80 km, are officially astronauts.

  • As a space elevator in Japan "rise" to the International Space Station

Under these conditions, the flight plan Virgin Galactic, when classified as space.


SpaceX, Elon Musk, launched into space car Tesla as part of its project Falcon Heavy rocket

"Somewhere between 50 km and 200 km away there is an area that can not fly (suspended), but not in an orbit (like a satellite or spacecraft)," said Knock.

" edge Space somewhere between these points. "

border crossing

Another way to define what it means to achieve space & # 39; is the creation of a point at which the ends atmosphere Earth.

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In this case, it must be upgraded to 100.000 km Some authors attribute the exosphere.

In accordance with this definition, says NOOA, International Space Station, which is 400 km, or a space shuttle in orbit more than 300 km, they will not be considered in space.


There is no consensus about where the space begins

"Basically, being in the space means being vacuum above the atmosphere, "he tells BBC Jeffrey Hoffman, professor of aerospace engineering at the Massachusetts Institute of Technology.

"However, even orbital altitude a few hundred kilometers, there is a very thin atmosphere. "

Thus, while the experts agree on where to locate space boundariesEngineers and pilots continue to work in a hurry to reach this limit … no matter how far you put it.

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