The Solar Orbiter has never been this close to the Sun!

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[EN VIDÉO] Discover unusual images of the sun thanks to Solar Orbiter
The first images of the ESA Solar Orbiter have just been released! They show the Sun in all its splendor in high definition.

Nearly two years ago and about four months after launch on June 15, 2020 solar orbiter made his first visit ” about “ our sun. Probe (ESA, NASA) then traveled 77 million kilometers from our star. About half the Earth-Sun distance. A great opportunity, especially for researchers, to test ten instruments on board the vehicle. But the goal has not yet been reached.

Since then Solar Orbiter has benefited from several operationsgravity assistrelying on our Earth and Venusto finally, this Saturday, March 26, 2022, get closer to our star by less than a third Earth-Sun distance. Or about 48 million kilometers of its seething surface alone. Thus, the probe penetrated into solar corona. And all of his ten instruments worked great, collecting data and images of our sun like astronomers never seen him before.

Over the next few years, Solar Orbiter will make several passes near our star. Of course, sending valuable information to researchers, especially since the probe will also focus more and more on the poles of our sun. Regions that have rarely been observed.

Sun in extraordinary resolution

Pending the publication of these unpublished photos and for them to reveal some more of our star’s secrets, the researchers working on the Solar Orbiter mission are already sharing the image. resolution breathtaking. About 83 million pixel. The resolution is ten times better than our 4K screens. Simply put, the best image of the corona and the entire disk of our Sun ever taken.

The picture was taken March 7th. UsingExtreme ultraviolet Image (EUI) when Solar Orbiter was about half the distance from the Earth to the Sun. An image, or rather an image. Because the spatial resolution of the EUI is such that at 75 million kilometers it takes 25 images to cover the entire surface of our Sun. At a rate of about ten minutes for each shot, it took the probe at least four hours to perpetuate our star in this way.

Since it is in the extreme ultraviolet range that the EUI observes our Sun, at a wavelength of 17 nanometersastronomers will be able to receive information from high atmosphere our star. The environment in which temperature rises to about a million degrees Celsius.

Another selection of amazing images

The tool called Spectral image of the coronal medium (SPICE) also returned exceptional images. The first of its kind in 50 years. And in fact, by far the best.

The device is designed to penetrate the layers of the solar atmosphere from the corona inward to chromosphere – by analyzing wavelengths light extreme ultraviolet radiation from various atoms. I’hydrogen gas at a temperature of about 10,000°C, here in purple carbon at around 32,000 °C, blue,oxygen at a temperature of about 320,000 ° C, in green, and neon at a temperature not lower than 630,000 ° C, yellow. What to allow physics trace solar flares observed in the crown down to the lower layerssun atmosphere. And, perhaps, to finally understand why the temperature increases in a completely illogical way as we move away in the solar atmosphere from the surface of our star.

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