Science NewsCurated by RSF Research Staff Home > Science News > Is an anomaly in the CMB radiation from interaction with another universe outside our own? Since the 1960s, astronomers have been aware of the electromagnetic background radiation that pervades the Universe. Known as the Cosmic Microwave Background, this radiation is the oldest light in the Universe and what is left over from the Big Bang. By 2004, astronomers also became aware that a large region within the CMB appeared to be colder than its surroundings. Known as the “CMB Cold Spot”, scientists have puzzled over this anomaly for years, with explanations ranging from a data artifact to it being caused by a supervoid. According to a new study conducted by a team of scientists from Durham University, the presence of a supervoid has been ruled out. This conclusion once again opens the door to more exotic explanations – like the existence of a parallel Universe! The Cold Spot is one of several anomalies that astronomers have been studying since the first maps of CMB were created using data from the Wilkinson Microwave Anisotropy Probe (WMAP). These anomalies are regions in the CMB that fall beneath the average background temperature of 2.73 degrees above absolute zero (-270.43 °C; -460.17 °F). In the case of the Cold Spot, the area is just 0.00015° colder than its surroundings. And yet, this temperature difference is enough that the Cold Spot has become something of a thorn in the hip of standard models of cosmology. Previously, the smart money appeared to be on it being caused by a supervoid – and area of space measuring billions of light years across which contained few galaxies. To test this theory, the Durham team conducted a survey of the galaxies in the region. This technique, which measures the extent to which visible light coming from an object is shifted towards the red end of the spectrum, has been the standard method for determining the distance to other galaxies for over a century. For the sake of their study, the Durham team relied on data from the Anglo-Australian Telescope to conduct a survey where they measured the redshifts of 7,000 nearby galaxies. Based on this high-fidelity dataset, the researchers found no evidence that the Cold Spot corresponded to a relative lack of galaxies. In other words, there was no indication that the region is a supervoid. The results of their study will be published in the Monthly Notices of the Royal Astronomical Society (MNRAS) under the title “Evidence Against a Supervoid Causing the CMB Cold Spot“. Continue Reading at: Article: https://www.universetoday.com/135236/another-universe-sitting-close-us-multiverse-bus/ Measuring gravitational waves to see inside starsSeptember 20, 2017New progress in Quantum Machine LearningSeptember 19, 2017The emergent physics of animal locomotionSeptember 19, 2017Water Droplets SuperpropulsionSeptember 18, 2017Supernova observations helping understand general relativitySeptember 18, 2017 Sharing is caring - please share this with your friends: Facebook Twitter If you like this content, you will love the Resonance Academy.