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The Wilkinson Microwave Anisotropy Probe (WMAP) spacecraft seven-year analysis estimated a universe made up of 72.8% dark energy, 22.7% dark matter, and 4.5% ordinary matter. [4] Work done in 2013 based on the Planck spacecraft observations of the cosmic microwave background gave a more accurate estimate of 68.3% dark energy, 26.8% dark matter ...
Dark matter regularly appears as a topic in hybrid periodicals that cover both factual scientific topics and science fiction, [180] and dark matter itself has been referred to as "the stuff of science fiction". [181] Mention of dark matter is made in works of fiction.
Based on the 2013 data, the universe contains 4.9% ordinary matter, 26.8% dark matter and 68.3% dark energy. On 5 February 2015, new data was released by the Planck mission, according to which the age of the universe is 13.799 ± 0.021 billion years old and the Hubble constant was measured to be 67.74 ± 0.46 (km/s)/Mpc .
The universe's contents include ordinary matter - stars, planets, gas, dust and all the familiar stuff on Earth, including people and popcorn - as well as dark matter, which is invisible material ...
It is so vast it is thought to make up nearly 70% of the universe — while ordinary matter like all the stars and planets and people make up just 5%. But findings published earlier this year by an international research collaboration of more than 900 scientists from around the globe yielded a major surprise.
The fraction of the total energy density of our (flat or almost flat) universe that is dark energy, , is estimated to be 0.669 ± 0.038 based on the 2018 Dark Energy Survey results using Type Ia supernovae [8] or 0.6847 ± 0.0073 based on the 2018 release of Planck satellite data, or more than 68.3 % (2018 estimate) of the mass–energy density ...
Paul Sutter explained the dark matter landscape while reporting on the paper for Live Science. “Dark matter may be ... that make up the Earth and everything on it, all the time, and we’d never ...
To make that assumption work, astronomers have used the concept of dark energy. For a century, scientists have thought that the universe was expanding in all directions.