Dark matter is believed to make up most of the mass in the universe based on discrepancies found when calculating galaxy masses. In the 1970s, scientists coined the term dark matter to describe this unknown matter. Dark matter could exist as either massive compact objects like black holes or weakly interacting massive particles. Its existence is important because a large amount of matter in the universe cannot be accounted for through other means. In addition, dark matter could influence theories about the universe's creation. Dark energy is a mysterious force that is accelerating the expansion of the universe. It is estimated to make up about 70% of the universe.

1. By: Amanda D.

2. What is Dark Matter? Dark Matter is what scientist believe the universe is mostly comprised of. When calculating mass of the galaxy, their were many discrepancies, and scientist felt that the only way to prove this was by creating an unknown matter In 1933 Astronomer Fritz Zwicky came up with this concept It wasn’t until the 1970’s that scientist coined the term Dark Matter

3. Scientists Thoughts Dr. Margon, "Mother Nature is having a double laugh. She's hidden most of the matter in the universe, and hidden it in a form that can't be seen” This shows us how the scientific community feels and how they are very frustrated by this aspect of space

4. What is it? (Taken Farther) Dark matter range from tiny subatomic particles weighing 100,000 times less than an electron to black holes with masses millions of times that of the sun There are two main categories of dark matter which are MACHOs (Massive Astrophysical Compact Halo Objects), and WIMPs (Weakly Interacting Massive Particles) MACHOs are made of 'ordinary' matter, which is called baryonic matter WIMPs is made up of non-baryonic matter.

6. Why is this Important? This “theory” of dark matter is important because there a large number of matter not being accounted for. Not only that this matter can make or break certain theories of how the universe was created. This matter makes up about 25% of the universe

7. What is Dark Energy? This an unexplainable force that is drawing galaxies away from one another. This energy is an attempt by scientist’s to explain the ever expanding universe This energy is about 70% of space

8. Thoughts Albert Einstein knew that were the places in space didn’t appear to have matter, their had to be something there This energy is a property of space itself, therefore it cannot be diluted as space expands, but since there is more energy forming it actually gets stronger

9. Theories Some think that this energy is a new type of fluid or field something that fills all of space but something whose effect on the expansion of the Universe is the opposite of that of matter and normal energy Quantum theory- "empty space" is actually full of temporary ("virtual") particles that continually form and then disappear Those are just two theories on dark energy and what people think it could be

11. Graph Explained The graph on the last slide showed how much of the universe is made up of matter or energy that we don’t even really know what it is. It goes to show you just how vast our universe is, considering that planets and stars only make up about 5% of the universe.

12. Bibliography Miller, Chris. &quot;Dark Matter.&quot; Welcome to Netcarrier . N.p., n.d. Web. 3 Feb. 2010. <http://www.eclipse.net/~cmmiller &quot;ScienceDaily: Dark Matter and Dark Energy News.&quot; Science Daily: News & Articles in Science, Health, Environment & Technology . N.p., n.d. Web. 3 Feb. 2010. <http://www.sciencedaily.com/news above, scientists have come up with the composition that we described, ~70% dark energy, ~25% dark matter, and ~5% normal matter. What is dark matter?. &quot;Dark Energy, Dark Matter — NASA Science.&quot; NASA Science . N.p., n.d. Web. 3 Feb. 2010. <http://nasascience.nasa.gov/astrophysics/what-is-dark-energy>. way, the, and there is a one million dollar &quot;Origin-of-Life&quot; prize being offered:. &quot;Let There Be Light.&quot; Let There Be Light . N.p., n.d. Web. 3 Feb. 2010. <http://lettherebelight-77.blogspot.com/>.