The twin of the Milky Way found in the constellation Ophiuchus

Previously, scientists believed that the Milky Way did not experience starbursts, but recently it has been proven

the opposite: scientists have found several populations of stars, presumably generated during its collisions with other galaxies, which occurred about 5.7, as well as 1.9 and 1 billion years ago.

The disk of our galaxy consists of two parts:thin and thick disc. The second arose about 8.6 billion years ago as a result of the fact that the Milky Way collided or merged with another fairly large galaxy.

This event led to the fact that a significant portion of the ancient stars were ejected from the disk of the galaxy, forming a rarefied layer about a thousand light-years thick surrounding the thin disk.

It is traditionally believed that thick and thin discsThe Milky Way emerged in the distant past as a result of a particularly strong collision between our galaxy and one of its neighbors. For this reason, astronomers believed that something similar should not be found among other spiral galaxies. Our observations indicate that these theories are most likely wrong.

Nicholas Scott, Research Fellow at ASTRO

After that, the authors of the work studied the UGC galaxy10738, which is located in the constellation Ophiuchus at a distance of 320 million light years from the Milky Way. Taking pictures of it using the VLT telescope installed at the Chilean Paranal Observatory, scientists found that its disk also consists of two separate parts.

At the same time, scientists did not find anyevidence that this galaxy has collided with other objects in the past. This, they say, means that this kind of structure can appear on its own.

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