An interesting study shows that the voids of space, those areas of the universe in which galaxies are not present, could help to measure the expansion of the universe with greater precision than the classical methods.
The “voids” of space do not contain galaxies, or contain very few, and can be very large. They can also have different shapes but despite these characteristics that differentiate them from each other they can be considered as “standard spheres,” comparable to perfectly symmetrical objects and this because they are not characterized by a particular alignment direction.
However, researchers at the University of Portsmouth have noted that the forms these voids take may be distorted by the doppler shifts caused by the expansion and removal of neighboring galaxies as well as by the nature of the dark energy’s dark matter.
These factors produce distortion and the latter can be measured following theoretical modeling. The study shows that the measurement can be carried out with an excellent degree of precision, so that the same analysis can help to understand more about the way in which the cosmos is expanded.
The first results that the researchers obtained show a flat universe with constant dark energy at the cosmological level, results that further remove alternative theories.
However, Seshadri Nadathur, a researcher of the Institute of Cosmology and Gravitation (ICG) of the University of Portsmouth and principal author of the study, declares that further future studies, especially those related to the European Space Agency’s Euclid mission, will be able to provide even more important data to understand cosmic expansion through this method.