قالب وردپرس درنا توس
Home / Science / Here's something you've never seen before: The North Pole of the Sun.

Here's something you've never seen before: The North Pole of the Sun.



We humans are very curious about the atomic furnace that drives life on Earth. We have looked at the sun in many different ways, both on Earth and on Earth. However, it was very difficult for us to take a look at his poles.

Now, a solar mission has delivered us exactly in the form of an image, assembled from data collected by the European Space Agency (ESB)'s PROBA-2 satellite (PRoject for OnBoard Autonomy 2) in orbit around Earth.

Our home planet – and most things in the solar system – orbits the sun in a more or less flat plane, near the equator of the star. This is called the ecliptic plane and is the result of the flat disk of dust and gas that swirled around the baby sun that formed the planets.

For practical reasons, we also launch spacecraft on the ecliptic plane. The rotation of the earth around its axis gives the rocket a small boost, which means that it takes less effort to bring it into space. The closer the start is at the equator, the greater the thrust. It would be much harder to fire a rocket from the polar regions of the earth.

Therefore, rockets fired from Earth are already flying in the ecliptic plane and are therefore usually unable to look at the poles of the Sun. It is possible to get out of this plane but it is quite difficult and time consuming.

In fact, there was a probe that examined the poles of the sun. NASA, ESA, and the Canadian National Science Council worked together at Ulysses, which wound over the poles of the sun at a distance of almost 322 million kilometers. That's more than twice the average distance between Earth and Sun.

It was an absolute unity of a feat. They had to send the probe all the way to Jupiter. When he arrived there, they had to slow him to a standstill and then use Jupiter's gravity to eject Ulysses from the Ecliptic.

Then in 1

994, over the 15 years, only three huge loops of the sun were made until 2009. And we learned a lot from Ulysses – but none of his instruments was a camera.

This is the reason why we have never been able to see one of the poles of the sun directly with our eyes. [19659003] This time we're not looking at a photo, actually, but it's very close.

"Although the poles can not be seen directly, the space probes capture the solar atmosphere, but collect data about everything along their line. Also, look at the atmosphere that stretches around the solar disk," explained the ESA.

"Scientists can use this to infer the appearance of polar regions."

Slice for small disc as the sun turns, PROBA-2 removes these elements in extreme ultraviolet wavelengths and then combines them into a reconstruction of the solar masts.

You can see the lines between each layer, and the line across the center is created by small changes in the solar atmosphere over the period in which the data was collected.

ESA Scientists These images have been built since June of this year and uploaded to a database so they can observe how the poles of the Sun change over time.

This is so that they can build on the knowledge accumulated by Ulysses and try to learn more about the dynamics of solar phenomena in the polar regions – such as coronal holes, Alfvén waves and Rossby waves.

NASA's Parker Solar Probe, launched earlier this year, has already come closer to the Sun than any other spacecraft before. But the ecliptic plane will not leave.

For recent photos, we may have to wait for the ESA Solar Orbiter, which is scheduled for 2020. Although he will not orbit the poles, he will zoom at high speed. enough latitude to map these mysterious and elusive regions.


Source link