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All disk galaxies take around a billion years to complete a full rotation, regardless of their size or composition. This discovery will aid in understanding how galaxies function. Other universal truths include the rotation of everything in space and the size of various galaxies.
While space still holds countless mysteries, researchers recently uncovered an extraordinarily universal truth about disk galaxies: They all take about a billion years to complete a full rotation. According to the International Center for Radio Astronomy Research (ICRAR), it doesn’t matter how many stars or planets a galaxy contains. ICRAR’s recent discovery of the uniform nature of rotation will help cosmologists better understand how galaxies work.
Universal truths:
Everything in space rotates: even as we orbit the Sun, it rotates around the center of our galaxy; it takes about 225 million years to complete a full circle.
The largest known galaxy is IC 1101, which has about 100 trillion stars.
The Milky Way is estimated to contain between 100 and 400 billion stars, with a diameter of between 100,000 and 150,000 light-years.
