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  2. Dark matter - Wikipedia

    en.wikipedia.org/wiki/Dark_matter

    In astronomy, dark matter is a hypothetical form of matter that does not interact with light or other electromagnetic radiation.Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be observed.

  3. Cosmic microwave background - Wikipedia

    en.wikipedia.org/wiki/Cosmic_microwave_background

    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 .

  4. Discovery of cosmic microwave background radiation - Wikipedia

    en.wikipedia.org/wiki/Discovery_of_cosmic...

    The discovery of cosmic microwave background radiation constitutes a major development in modern physical cosmology.In 1964, US physicist Arno Allan Penzias and radio-astronomer Robert Woodrow Wilson discovered the cosmic microwave background (CMB), estimating its temperature as 3.5 K, as they experimented with the Holmdel Horn Antenna.

  5. Cosmic neutrino background - Wikipedia

    en.wikipedia.org/wiki/Cosmic_neutrino_background

    The cosmic neutrino background (CNB or C ν B [a]) is the universe's background particle radiation composed of neutrinos.They are sometimes known as relic neutrinos.. The C ν B is a relic of the Big Bang; while the cosmic microwave background radiation (CMB) dates from when the universe was 379,000 years old, the C ν B decoupled (separated) from matter when the universe was just one second old.

  6. Findings by dark energy researchers back Einstein's ... - AOL

    www.aol.com/news/findings-dark-energy...

    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 ...

  7. Dark Matter May Not Be Invisible After All. This Discovery ...

    www.aol.com/dark-matter-may-not-invisible...

    Dark matter is called ‘dark’ because it’s invisible to us and does not measurably interact with anything other than gravity. It could be interspersed between the atoms that make up the Earth ...

  8. Indirect detection of dark matter - Wikipedia

    en.wikipedia.org/wiki/Indirect_detection_of_dark...

    Indirect detection relies on the products of dark matter interactions. Thus, there are several different models of dark matter interactions to consider. Dark matter (DM) is often considered stable, as a lifetime greater than the age of the universe is required ( yrs) for large amounts of DM to be present today. [1]

  9. Astronomers create first image of dark matter web - AOL

    www.aol.com/news/2017-04-12-dark-matter-web...

    That's the first composite image of a dark matter web that stretches between galaxies, according to a paper published in Monthly Notices of the Royal Astronomical Society.