Dark matter

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Dark matter is an invisible form of matter that has mass. It does not emit or absorb heat, light, or any other electromagnetic waves. Also, it “weakly” interacts with ordinary matter, making it even more stealthy. Of all the branches of science, one of the most popular is astronomy, and for good reason. Who on Earth has ever wondered about twinkling stars, the shining Moon, and the occasional meteors that light up our night sky! Since the invention of the telescope, our curiosity about the worl Forms Of Matter, Cosmic Microwave Background, Interesting Science Facts, Light Of Christ, Dark Energy, Greatest Mysteries, Quantum Mechanics, Quantum Physics, Dark Matter

Dark matter is an invisible form of matter that has mass. It does not emit or absorb heat, light, or any other electromagnetic waves. Also, it “weakly” interacts with ordinary matter, making it even more stealthy. Of all the branches of science, one of the most popular is astronomy, and for good reason. Who on Earth has ever wondered about twinkling stars, the shining Moon, and the occasional meteors that light up our night sky! Since the invention of the telescope, our curiosity about the…

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The cosmic web. Every pinpoint represents a galaxy, revealing a weblike structure of clusters and filaments. Incredible. Matter Experiments, Cosmic Web, Structure Of The Universe, Dark Energy, Space Images, Carl Sagan, Quantum Physics, Dark Matter, To Infinity And Beyond

[/caption] One of a number of seemingly implausible features of dark energy is that its density is assumed to be constant over time. So, even though the universe expands over time, dark energy does not become diluted, unlike the rest of the contents of the universe. As the universe expands, it seems that more dark … Continue reading "Astronomy Without A Telescope – Big Rips And Little Rips"

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We live in a universe dominated by unseen matter, and on the largest scales, galaxies and everything they contain are concentrated into filaments that stretch around the edge of enormous voids. Thought to be almost empty until now, a group of astronomers now believe these dark holes could contain as much as 20% of the 'normal' matter in the cosmos and that galaxies make up only 1/500th of the volume of the universe. Cosmic Web, Physics World, Dark Holes, Black Holes, Dark Energy, Ad Hoc, Dark Corners, Light Year, Dark Matter

We live in a universe dominated by unseen matter, and on the largest scales, galaxies and everything they contain are concentrated into filaments that stretch around the edge of enormous voids. Thought to be almost empty until now, a group of astronomers now believe these dark holes could contain as much as 20% of the 'normal' matter in the cosmos and that galaxies make up only 1/500th of the volume of the universe.

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This visualization of the Laniakea supercluster, which represents a collection of more than 100,000... [+] estimated galaxies spanning a volume of over 100 million light-years, shows the distribution of dark matter (shadowy purple) and individual galaxies (bright orange/yellow) together. Despite the relatively recent identification of Laniakea as the supercluster which contains the Milky Way and much more, it's not a gravitationally bound structure and will not hold together as the Universe cont Cosmic Web, Structure Of The Universe, Cosmic Microwave Background, Star Clusters, Hubble Images, Black Holes, Dark Energy, Hubble Space, Milky Way Galaxy

This visualization of the Laniakea supercluster, which represents a collection of more than 100,000... [+] estimated galaxies spanning a volume of over 100 million light-years, shows the distribution of dark matter (shadowy purple) and individual galaxies (bright orange/yellow) together. Despite the relatively recent identification of Laniakea as the supercluster which contains the Milky Way and much more, it's not a gravitationally bound structure and will not hold together as the Universe…

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