According to the news outlet the Daily Star, low-energy neutrinos can pass by our planet with no problem, barely interacting with anything.
Nevertheless, high-energy particles will be stopped by our planet’s solid matter, which is why these high-energy particles are detected coming “down” from space.
However, the team’s ANITA detected a tau neutrino or a heavier particle coming from “up” out of the Earth in 2016, which means that these particles are traveling back in time and could be evidence of a parallel universe.
The bizarre phenomenon was reported by the NASA scientists, led by Peter Gorham, an experimental particle physicist from the University of Hawaii, as well as the principal investigator of the ANITA. Even the discovery of the tau neutrino happened by accident, as Gorham and his team decided to investigate signals that have been dismissed as noise in the first two flights of the device, as noted by New Scientist.