Weird or not: all galaxies rotate at the same speed
Amazing discovery: all galaxies rotate at the same speed no matter how big they are - science news

Scientists have discovered an interesting pattern in the way galaxies rotate: all of them rotate at a similar speed of about one billion years per spin. This is valid for both the large galaxies and the small ones. The discovery of such regularity will help astronomers to understand the mechanics of galactic motion. Moreover, the study found evidence of older stars at the periphery of galaxies. This finding contradicts the previous models that predicted the existence of young stars at the edge of galaxies. This helps redefine the borders of galaxies, improving the precision of astronomical observations.

Read the full story: ICRAR
Scientific publication: The Monthly Notices of the Royal Astronomical Society