Scientists have made new calculations and recalculated the speed at which the Solar System moves around the center of the Galaxy. It turned out to be three times faster than previously thought.
New research by astronomers
How fast and in what direction is our Solar System moving through the Universe? This seemingly simple question is one of the key tests of our cosmological understanding. A research team led by astrophysicist Lukas Böhme from Bielefeld University has found new answers that challenge the widely accepted standard model of cosmology.
Analysis by scientists shows that the Solar System is moving more than three times faster than modern models suggest. This result clearly contradicts expectations based on standard cosmology and is forcing astronomers to rethink their previous assumptions.
Linking the motion of the Solar System with radio galaxies
To determine the motion of the Solar System, the team analyzed the distribution of so-called radio galaxies—distant galaxies that emit particularly strong radio waves, a form of electromagnetic radiation with very long wavelengths, similar to those used for radio signals. Since radio waves can penetrate dust and gas that block visible light, radio telescopes can observe galaxies that are invisible to optical instruments.
As the Solar System moves through the Universe, this motion creates a barely noticeable “headwind”: slightly more radio galaxies appear in the direction of motion. The difference is minimal and can only be detected with extremely sensitive measurements.
Using data from LOFAR (Low Frequency Array), a European network of radio telescopes, combined with data from two additional radio observatories, researchers were able to conduct a particularly accurate count of such radio galaxies for the first time. They applied a new statistical method that takes into account the fact that many radio galaxies consist of several components. This improved analysis gave more realistic measurement errors.
Despite this, combining data from all three radio telescopes revealed a deviation exceeding five sigmas, which is a statistically very strong signal that is considered by science to be evidence of a significant result.
New conclusions for cosmology
Measurements show anisotropy (dipole) in the distribution of radio galaxies, which is 3.7 times stronger than the standard model of the Universe suggests. This model describes the origin and evolution of the cosmos since the Big Bang and assumes a predominantly uniform distribution of matter.
“If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure of the universe,” explains Professor Dominik J. Schwarz, a cosmologist at Bielefeld University and co-author of the study.
The new results confirm previous observations in which scientists studied quasars—the brightest centers of distant galaxies, where supermassive black holes absorb matter and emit enormous amounts of energy. The same unusual effect appeared in these infrared data, indicating that this is not a measurement error, but a genuine feature of the Universe.
The study highlights how new observation methods can radically change our understanding of space and indicates how much remains to be discovered in the Universe.
According to phys.org
