Dark energy was discovered in 1998 by two teams of scientists, including American astronomers Adam Riess and Saul Perlmutter, as well as the Australian astronomer Brian Schmidt. Since then, one of the biggest mysteries in science is what exactly is dark matter in the first place and what or who put it in the Universe.
What’s for sure is that dark energy plays a crucial role in our physical existence, as it helps the Universe to expand in preventing it from crashing back towards the singularity that it came from.
Distance range between 0.7 and 1.8 billion light-years away from Earth
Phys.org writes about the new scientific results released by the Baryon Oscillation Spectroscopic Survey (eBOSS) collaboration, meaning two studies on dark energy led by Prof. Wang Yuting and Prof. Zhao Gongbo from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC).
The team of Prof. Zhao measured the history of structure growth and cosmic expansion within a huge volume from a distance range from 0.7 and 1.8 billion light-years away. The study relied on the ‘multi-tracer analysis’ method.
Prof. Zhao declared:
This work detected the existence of dark energy at a significance of 11 sigma, which is the strongest evidence ever on dark energy from galaxy surveys,
The eBOSS observations are consistent with the dynamical dark energy probed by our team using the BOSS survey four years ago.
About 68% of our physical Universe consists of dark matter, so it’s obviously crucially important to learn more about this mysterious structure. The normal matter that’s made up of atoms and molecules represents only about 4% of the Universe’s mass.
The new study led by Prof. Zhao was published in Monthly Notices of the Royal Astronomical Society.