Finding measurable hints of dark energy’s effects on distant objects and the shape of space itself primary goal of NASA’s mission, such as the upcoming Nancy Grace Roman Space Telescope. In the journal Physical Review D on September 15, a new paper was published. For 2nd observation of dark energy, a group of cosmologists suggested that researchers might not need to go deep into the cosmos. It can be detected in the Earth itself.
Researchers claim in the paper that that hints of dark energy were detected at the Gran Sasso National Laboratory in Italy during an experiment designed to detect dark matter. The team comprised chiefly of theorists. They looked into the data from the XENON1T. Held in a particular detector, it is an experiment designed to detect rare interactions between components of the noble gas xenon and hypothetical dark matter particles.
The dark energy that has been detected is very low. There are many other explanations for the signal, and till now, it is not clear if it is just a statistical anomaly. The detection was an anomaly. Statistically, 5% chances are there. The detection of dark energy in XENON1T would mean the 1st energy experimental verification of what is arguably the most powerful force shaping the evolution and fate of the entire cosmos.
Dark energy in terms of physical cosmology and astronomy is an unknown form of energy that affects the universe on an enormous scale. For its existence, the 1st observational evidence came from the measurement of supernovae. This showed that the universe does not expand at a constant rate; rather, it is accelerating.
The universe has been expanding for years that physicists have known. In the late 1990s, observations made it clear that the universe grew larger at an accelerating rate. That was an extraordinary thing to discover. The results are strange because it is expected that all the galaxies to be pulling on each other and slowing down the expansion of the universe. Its expansion was a huge surprise.
According to astrophysicists, dark energy fills space, and its negative pressure inflates the cosmos like a balloon. It is believed to be 68% of the mass of the universe. With the expansion of the universe ratio grows. There is very little interaction with gravity. Around 27% of the mass is dark matter, which is unrelated to dark energy. Dark matter is an object that cannot be easily detected or matter made out of exotic particles. The remaining 5% is consists of ordinary matter.
In June 2020, it was reported by a XENON team that their experiment had recorded an excessive number of particle interactions with electrons in the detector compared with their predictions. For extra detections, proposed explanations range from statistical anomalies to the detection of solar axions. It is a hypothetical type of dark matter particle that could be produced in the core of the Sun.
The other researchers are in the view that XENON1T may have incidentally detected dark energy chameleon particles. It could be created in the Sun, which is a hypothetical form of dark energy, under the conditions of the XENON1T experiment. It interacts with ordinary matter in the same way as solar axions.