January 17, 2022

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Parker Solar Probe, the first space probe in history to come very close to the Sun!

NASA’s Parker Solar Exploration, launched in 2018, aims to study the solar corona, the outermost part of the Sun’s atmosphere. This system is breaking new records by crossing the solar atmosphere.

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[EN VIDÉO] Diving in the solar “campfire”
The Solar Orbiter Mission’s Ultraviolet (EUI) Imager has already created breathtaking images of our sun. Here, first of all, the relatively cold chromosphere – about 100,000 ° C – and the corona – the area of ​​change between one million degrees Celsius. Then, some details of the solar corona. And comparison with the chromosphere, in pink, thanks to the imager’s Lyman alpha channel. Finally, a closer zoom that reveals sunlight “campfires” is a miniature burn that helps researchers explain the heat of the crown. © Solar Orbiter / EUI Team / ESA & NASA

This is the first time in history that a spacecraft has “touched” the sun: the Parker Solar probe has just entered Solar corona (His outer part Atmosphere) To study particles and Magnetic fields Sun light.

The Parker Solar Study, which broke the Sun’s atmosphere again! © NASA

Paths in the solar atmosphere full of discoveries

Because the sun has no surface, the boundary between the solar atmosphere and the planetary space is blurred. Solid. This is called the Alfvén Critical Surface, and it is characterized by point Gravity And the sun’s magnetic field cannot retain particles that are constantly pushed outwards Heat Of ‘Star. The successive inputs and outflows of the Parker study also show that the Alfven range did not follow a well-rounded ball shape, but rather provided the shapes of ridges and valleys as if its surface were “shrinking”.

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In this proximity to the Sun, the study can measure conditions in the solar atmosphere like never before, indicating significant progress in understanding our star. The study, for example, has identified magnetic systems in the “laces” in the solar wind, but still stumbles upon their origin.

With the next paragraph of the corona scheduled for January 2022, this study will continue to be closer and closer to the sun, providing data on events that cannot be explored from Earth.

8.5 million km from the Sun: Parker Solar Study Breaks Distance and Speed ​​Record!

NASA’s Parker Solar probe, launched in 2018, aims to explore Solar corona, The outer part of the Sun’s atmosphere. After a gravity assist surgery around Friday, Set new records this Sunday at the age of ten Around the circular path, by reaching a Speed 163 kilometers per second (or 586,800 km / h), about 8.5 million kilometers from the Sun.

By article Caspar Solomon, Released on 23 November 2021

After a gravitational support operation around Venus, it broke new records in its tenth orbit this Sunday, reaching a speed of 163 kilometers (586,800 km / h) at a distance of about 8, 5 million kilometers from the Sun.

The Solar corona Has a temperature of one million degrees (a hundred times higher than the surface temperature of the sun). She is in appearance Solar wind (Flux D ‘Ions And d ‘Electrons Bombing our planets Star system) And the mechanisms behind these events are not yet properly understood.

The main purpose of the Parker Solar study is to determine the processes that cause heat in the solar corona and the acceleration of energetic particles. Throughout its measurements, it orbits in an elliptical orbit Perihelion (The closest point to the center of the orbit) is closest to the sun, andAphelia (Point farthest from the center of orbit) In the orbit of Venus. The gravitational effect of the latter is used to gradually reduce the perihelion and allow the study to approach. Of the sun.

Surprising and unexpected discovery

Whereas Study Fast-forwarding to the sun, the instruments on board made the unexpected discovery possible: according to researcher Noor Rauwafi Parker Solar Study, We notice more dust near the sun than expected .

This study was not initially designed to detect grains Dust, But the implications they create in the course of the study format Clouds Plasma generating captured electrical discharges Tool fields The study, initially designed to measure Electric fields And the magnet of the sun. These impacts are highlighted Light The presence of a dust cloud rotates in its interior The Solar System, Still very poorly explored.

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After two more Flyovers In 2023 and 2024, Venus will reach a distance of 6.2 million kilometers from the Sun at a speed of 700,000 km per hour.

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