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Dark matter - Wikipedia

en.wikipedia.org/wiki/Dark_matter

Dark matter is an unidentified type of matter distinct from dark energy, baryonic matter (ordinary ..... If luminous mass were all the matter, then we can model the galaxy as a point mass in the cen...

Why do we call dark matter dark It emits no radiation that we - ASTR ...

www.coursehero.com/file/p5umm0af/Why-do-we-call-dark-matter-dark-It-emits-no-radiation-that-we-have-been-able-to/

Why do we call dark matter "dark"? It emits no radiation that we have been able to detect. Although most astronomers assume dark matter really exists, there ...

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  ...

What is Dark Matter? | CFHTLenS

www.cfhtlens.org/public/what-dark-matter

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 ...

Dark Matter and Dark Energy - National Geographic - Science

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?

What are dark matter and dark energy, and how are they affecting ...

www.scientificamerican.com/article/what-are-dark-matter-and/

Aug 28, 2006 ... Dark energy and dark matter describe proposed solutions to as yet unresolved gravitational phenomena. So far as we know, the two are distinct ...

What is dark energy? | Science Wire | EarthSky

earthsky.org/space/what-is-dark-energy

Sep 11, 2015 ... We need dark energy to explain why gravity seems to be driving galaxies in ... How do we think about something we can't see and don't experience in ..... an entity of matter and various energy that is required to call COSMOS.

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 ...

StarChild: Dark Matter

starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/darkmatter.html

Dark matter is composed of particles that do not absorb, reflect, or emit light, ... We know that dark matter exists because of the effect it has on objects that we can ...

What is Dark Matter? - Space.com

www.space.com/20930-dark-matter.html

May 1, 2013 ... Known as dark matter, this bizarre ingredient does not emit light or energy. So why do scientists think it dominates? Studies of other galaxies in ...