Here’s how black holes can tell us how old the universe is

By examining the collisions between black holesScientists may have found a terrifying new way to determine how fast the universe is expanding. While Black holes remain mysteriousa new study suggests they may also be able to fill in missing details about the universe’s early years, and possibly even its future.

Black holes have been the subject of speculation ever since Einstein first theorized their existence. Most form after a large star explodes into a powerful supernova. As parts of dying stars explode into space, they also collapse in on themselves, bringing much of their matter with them. Squeezing so much matter into a small space results in an extremely dense mass with a gravitational field of almost unbelievable force. The result is a strong gravitational pull that absorbs anything nearby, including all light, and sometimes other black holes. Experts believe that The largest black holes in the universe They were created from these mergers, although such collisions have not yet been directly observed.

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Related: The Milky Way’s black hole looks amazing in its first image

New research, published this month in physical review messages, speculates that by examining the consequences of such collisions, scientists can calculate the expansion rate of the universe. The speed at which the universe is inflating has always been a controversial topic and a major risk. The global expansion rate – known as the Hubble constant – is used to calculate other data, including the age of the universe itself. Before now, however, the various accepted methods of calculating this rate have led to different, and therefore unreliable, results. The study’s authors, Jose Maria Ezequiaga and Daniel E. Holz, hope so Black holes, which usually inspire new scientific questionsOne can finally definitively answer one. The collision of two black holes is exceptionally violent, and the aftermath of this collision sends signals of powerful gravitational waves that propagate through the universe. When the universe expands, it changes those signals. It may be possible to measure changes in such signals and thus accurately date stellar phenomena including, perhaps, the universe itself.


Epic teen, waste of time

The universe’s “teenage” years are the subject of great scientific interest, but at the moment they are shrouded in mystery. The origins of the universe are fairly well established. It can be measured by cosmic microwave radiation, and scientists continue to capture stunning images of increasingly ancient regions, such as Hubble image of the farthest star ever discovered. Near space provides a great deal of information about more recent events in the galaxies closest to our own. The interstellar interval, dating back nearly 10 billion years, is less well-studied. In an interview with SciTechDailyIzquiaga explained, “At about that time, we’ve gone from dark matter being the dominant force in the universe to dark energy dominating, and we’re very interested in studying this critical transition.. Dark energy, the force behind the accelerating expansion of the universe, is still poorly understood, making the teenage years of the universe of particular scientific interest.


In the coming years, as scientists collect more data from 40 billion billion black holes Destined to exist around the universe, the spectral siren technology may fill in the gaps in the biography of the universe. With more powerful data on black holesExperts hope to find out where the universe came from, but more importantly, where it is heading.

source: physical review messagesAnd the SciTechDaily

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