New discoveries about the Milky Way Galaxy The European Space Agency has provided amazing data

ESA’s Gaia space telescope has been observing the sky since 2014, and as ESA points out, “this mission has already turned our understanding of the Milky Way on its head several times over.” Now, another surprising discovery has been made in addition to the conclusions researchers reached by analyzing data from Gaia.

One of the goals of the Gaia telescope is to discover the history of our galaxy. The telescope helps achieve this by examining the wrinkles created as a result The Milky Way collides with other galaxies.

The Gaia Space Telescope continues to provide vital information, and now it has helped determine just that The last major collisions in the Milky Way occurred suddenly recently. Researcher Thomas Donlon and his team published the results of their analyzes of this collision in the Monthly Notices of the Royal Astronomical Society.

Jaya first discovered these wrinkles in 2018, a The study published today is the first to precisely determine the time of this sudden collision. Like the others, it also caused ripples, and based on data from Gaia, researchers were able to determine the moment of their occurrence by comparing observations with cosmological simulations.

– As we get older, we get more and more wrinkled, but our work shows that the opposite is true for the Milky Way. It’s a kind of cosmic Benjamin Button that gets less wrinkly over time – says Thomas Donlon of Rensselaer Polytechnic Institute and the University of Alabama in Huntsville, USA, lead author of the new study of data from the Gaia telescope. – By watching these ripples disappear over time, we can track when the last major collision of the Milky Way occurred – and it turns out that it happened billions of years later than we thought.

So when did this collision happen? As Heidi Jo Newberg, co-author of the aforementioned research, explains: “For the ripples to be as pronounced as the Gaia data suggest, they would have to be linked to an event that occurred less than three billion years ago — so At least five billion years later than previously thought“.

– Thanks to this data we found out The ripples may have formed when a dwarf galaxy collided with the Milky Way about 2.7 billion years ago.. We’ve called this event the Virgo Radial Merger, Donlon explains, adding: “The history of the Milky Way is constantly being rewritten, thanks in large part to new data from Gaia.” Our picture of the Milky Way’s past has changed dramatically in just a decade, and I believe our understanding of it will continue to change rapidly.

sources: doi.org/10.1093/mnras/stae1264European Space Agency.

Benjamin Blair

“Prone to fits of apathy. Introvert. Award-winning internet evangelist. Extreme beer expert.”

New discoveries about the Milky Way Galaxy The European Space Agency has provided amazing data

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New discoveries about the Milky Way Galaxy The European Space Agency has provided amazing data

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