The Milky Way is vibrating like a bell.

That's the conclusion of a group of Canadian and American astronomers, based on the findings that the Milky Way might have encountered a satellite galaxy or a large structure of dark matter about 100 million years ago. year.

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The evidence of this speculation comes from the results of the Digital Sky Survey (SDSS) carried out by the wide-angle optical telescope telescope set at the Apache Peak Observatory in New Mexico (USA).

Different image filters from SDSS can provide enough information to allow astronomers to classify each object in the sky.

The diagram shows the position of the Milky Way with satellite galaxies - (Photo: University of the Queen)

In this study, experts from the Queen's University (Canada) focused on observing the relative movement of stars during movement within the Milky Way, at speeds of 20 to 30 km / sec. , according to CBC News.

The data collected by SDSS shows that the up and down movements of stars are not as massive as people thought, but instead they shake like they are inside a bell during vibration.

According to expert Brian Yanny of Fermilab (USA), our galaxy has collided with something (possibly a satellite galaxy or dark matter) and it 'vibrates like a bell'.

And Susan Gardener, a professor of physics at the University of Kentucky (USA), said that the process of vibrating the stars may be taking place, not because of a single impact in the past.

According to the computer model, the Milky Way will stop 'vibrating' for about 100 million years, as long as it does not collide with any other material during this time.