Le satellite Gaia observant et mesurant les objets de la Voie lactée. À droite, les galaxies du petit et grand nuage de Magellan. © satellite : ESA/ATG medialab & Voie lactée : ESA/Gaia/DPAC ; CC BY-SA 3.0 IGO. Acknowledgement: A. Moitinho.

Major discoveries are coming, some of which will challenge our knowledge

Stay tuned if we are all interested in space science First images from the James-Webb Space Laboratory – It will be made public on July 12 – Community Astronomers Gaia is excited and excited today for the release of the third data table of the mission. Unlike other tasks that target specific objects, Kia is a “simple” survey task. So do not expect to see beautiful pictures of the universe.

If astronomers around the world are eagerly awaiting this data, it is because Gaya’s performance is unprecedented. In fact, this satellite is capable of tracking all objects 400,000 times fainter than very dim. Stars Can be found atEye Naked. As a result, this list, with new and improved details for nearly two billion stars in our galaxy, is the gold standard in astronomy. It lists about 1.8 billion celestial objects with unprecedented astronomical and photometric accuracy and represents a major improvement over the previous table (DR2) in terms of the accuracy, precision and integrity of astronomical and photometric data.

Great potential for information

To understand why “simple” measurements excite astronomers AstronomersFor every star it can detect in the galaxy, Gaia needs to know that each time it can measure its position and its motion in three dimensions, its color and its properties. Body And even glossy chemicals. This is not a new, slightly improved description of the galaxy, but more than a significant enrichment of knowledge.

Gaia’s data will be useful for all areas of astronomy and science.Astronomy. Not even an astronomer HistorianChemist or Physicist, Does not use its data directly or indirectly. Therefore, we expect new discoveries to make significant progress in our understanding of the universe and, more surprisingly, to question a certain level of knowledge.

Even an astronomer as a historian, chemist or physicist would not use his data directly or indirectly.

New in this database is the largest list of stars to date BinariesThousands of objects from The Solar System Satellites of planets and planets and beyond Milky WayMillions of galaxies and Quasars.

Launched in December 2013 to map more than a billion objects in our galaxy into 3D with unparalleled accuracy, Gaia should be operational by 2025. It took five years to provide a list of these third observations that spanned from 2014 to 2017, so it is necessary to wait. To get the final version of the 2030 Kia list.

Amazing discoveries

Many discoveries were made today. Thus, we know that some stars in our galaxy have formed Thing Others are just as important as us The sun, Made of materials enriched by previous generation stars. The center of our galaxy and the stars closest to the plane are rich Metals Than the distant stars.

Kia has identified stars that are different from galaxies based on their chemical composition. This diversity Very important because it tells the story of our galaxy formation. It reveals the migration processes in our galaxyAggregation From outer galaxies. This makes it clear that our sun and all of us belong to an ever-changing system, which is made up of clusters of stars. Gas Has a different look Says Alejandro Recio-Blanco of the C டிte d’Azur Laboratory in France, a member of the Gaia collaboration.

What’s even more surprising is that it was completed by Gaia Detection of stellar earthquakes that appear as small motions on the surface of a star, which changes the shape of the stars Says Conny Aerts of KU Leuven in Belgium, a member of the Gaia collaboration. Finally, the new list of binary stars provides properties Orbits Of these, more than 800,000 Binary systems, A new study of 156,000 asteroids deeply explores the origin of our solar system. Gaya also reveals information about 10 millionVariable starsMysterious Large molecules Beyond our own cosmic environment between stars and quasars and galaxies.

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