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Dark matter - Wikipedia

en.wikipedia.org/wiki/Dark_matter

Dark matter is an unidentified type of matter comprising approximately 27% of the mass and ..... Rotation curves for some elliptical galaxies do display low velocities for outlying stars (tracked fo...

Dark Matter, Dark Energy, and the Accelerating Universe ...

www.e-education.psu.edu/astro801/content/l10_p9.html

Today, we do not know what is the exact cause of this force, just that it exists. Since we call the matter that we cannot observe directly "dark matter," we call this  ...

How do we know dark matter exists if we can't see it? - NASA Space ...

spaceplace.nasa.gov/review/dr-marc-space/dark-matter.html

Click play to hear me read this to you! Our friends at W.A. Gayle Planetarium in Montgomery, Alabama, wonder, "How do we know dark matter exists if we can't ...

dark matter/dark energy - University of Oregon

abyss.uoregon.edu/~js/ast123/lectures/lec16.html

We know of the presence of dark matter from dynamical studies. ... We do not find many of these objects nearby, so to presume they exist in the dark matter halos ...

Dark Matter and Dark Energy - National Geographic

science.nationalgeographic.com/science/space/dark-matter/

Photo: A simulation of the dark matter distribution in the universe 13.6 billion years ago ... multiple forms of gravity, and the large-scale gravity governing galaxies differs from the gravity to which we are accustomed. ... For lack of a better name, scientists call this mysterious force dark energy. .... How Do You Define Family?

Dark Matter, Dark Energy, and the Fate of the Universe - Pearson

www.pearsonhighered.com/content/dam/region-na/us/higher-ed/en/products-services/course-products/bennettecp7einfo/pdf/bennett-ch18.pdf

What do we mean by dark matter ... Because this matter gives off little or no light, we call it dark ... Before we continue, it's important to think about dark matter and.

The Dark Cosmos - Javalambre Physics of the Accelerating ...

www.j-pas.org/outreach/dark_cosmos

How do we actually know that there is so much invisible matter out there? ... This “something else” we call dark energy, and it has the peculiar property that it ...

Dark Matter in the Universe - Indiana University Bloomington

www.indiana.edu/~geol105/images/gaia_chapter_1/dark_matter_in_the_universe.htm

Nowadays we prefer to call the missing mass "dark matter," for it is the light, not the ... study dark matter by its effects on the bright matter that we do observe.

Is Dark Matter called "Matter" only because of gravity? - Physics ...

physics.stackexchange.com/questions/293364/is-dark-matter-called-matter-only-because-of-gravity

Nov 18, 2016 ... Call it invisible mass, call it unknown mass, call it transparent galaxy glue, .... We don't know what dark matter is made of, but we do know that ...

Dark Energy: The Biggest Mystery in the Universe | Science ...

www.smithsonianmag.com/science-nature/dark-energy-the-biggest-mystery-in-the-universe-9482130/

Scientists have some ideas about what dark matter might be—exotic and still ... turn, has inspired us to ask, as if for the first time: What is this cosmos we call home? .... This has nothing to do with 'dark energy' So there is no 'dark energy' in this ...

More Info

What is Dark Matter? | CFHTLenS

www.cfhtlens.org

Scientists call this 'regular' matter baryonic matter, so called because it is made ... Dark matter is the name we give to matter we can not observe directly, and that ... If WIMPs really do interact through the nuclear force, scientists may be able to ...

Why Dark Matter? - CDMS

cdms.berkeley.edu

In fact, they are the primary constituents of all visible matter. ... stuff that no one has ever seen before, stuff that we call "dark matter" and "dark energy". ... To do the comparison, you need to find some way to independently estimate the total ...

How Do We Know Dark Matter Exists? - Universe Today

www.universetoday.com

Jan 23, 2008 ... How do we know dark matter actually exists, when we have no idea ..... 'To calldark matter” and “dark energy” DISCOVERIES is a violation of ...