Recent findings suggest that the density of dark energy, previously believed to be constant, may actually change over time, as highlighted by Emily Conover in the article “3-D map hints at dark energy’s secrets” (SN: 5/4/24 & 5/18/24, p. 6). The origin of dark energy remains a perplexing enigma. One theory proposed by Conover involves quantum fluctuations in empty space, where particles briefly materialize before disappearing. However, these fluctuations raise more questions, such as the discrepancy between the predicted amount of dark energy and what is actually observed in the universe, a difference of 120 orders of magnitude, as noted by Conover. This disparity continues to baffle scientists.
Research on Ötzi the Iceman’s tattoos suggests that they were created through hand-poking rather than slicing, according to Bruce Bower in the article “How Ötzi the Iceman really got his tattoos” (SN: 5/4/24 & 5/18/24, p. 4). A reader named Amy Perry raised questions about the potential pain Ötzi experienced during the tattooing process and whether any pain relief methods were available.
Date: 2024-06-29 07:00:00
Referenced from www.sciencenews.org