The European Space Agency has released the most accurate data on the Milky Way by the Gaia spacecraft

سازمان فضایی اروپا دقیق‌ترین داده‌های کهکشان راه شیری را توسط فضاپیمای گایا منتشر کرد

Astronomers have finally released data from the most accurate exploration of the Milky Way galaxy with the Gaia spacecraft, which contains thousands of “Starquake” and “Stargazing” stars, helping them find the farthest habitable points on our galaxy.

Observations that گایا The mission includes about two billion stars, which is only one percent of all the stars in the Milky Way galaxy. This data will allow astronomers to reconstruct the structure of the Milky Way galaxy and understand how it evolved over billions of years.

With Gaia’s previous data, astronomers were able to simulate the motion of stars in the Milky Way in great detail, and reverse the evolution of the Milky Way in the past by reversing their direction of growth. The new data, released by the European Space Agency today at 11:00 a.m. Tehran time, includes the chemical composition, temperature of stars, their color, mass and age, which have been obtained by accurate spectroscopy.

What is a Starquake?

These measurements strangely showed several earthquakes that astronomers did not expect. Earthquakes are actually tsunami-shaped events on the star’s surface that cause a wave to move across the star’s surface plasma.

Astronomers believe that these astronomers can give us useful information about the inner workings of stars, and this new data is a treasure trove for the asteroseismology of massive stars. This data from the change in the light of the stars is like watching the color and shape of the sun up close.

Gaia data from the movement of Milky Way stars over the next four hundred thousand years

The Gaia spacecraft is equipped with a billion-pixel camera and more than a hundred electronic detectors, and there is no similar spacecraft in space. The data that Gaia has sent us about the chemical composition of stars can give us an idea of ​​where they were born and how they evolved, and help us understand the history of the Milky Way.

What good is the chemical composition of stars?

The first stars to form in the universe, just after the Big Bang, had only the basic elements needed by a star, hydrogen and helium. These stars formed the first supernovae to explode, filling galaxies with other materials such as metal, carbon, and oxygen. In the same way, later generations of stars created other heavier elements that exist on Earth today and even in your body. As a result, the chemical composition of a star remains the same as that of its stars, giving us the necessary information about the origin of their formation.

These Gaia data show that stars closer to the galaxy’s disk have more metallic elements than stars farther away from the galaxy’s disk. In addition, these data from the chemical composition of stars indicate that some stars from other galaxies, such as the Large and Small Magellanic Clouds, entered our galaxy in the past.

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