<ul><li>Dark matter and dark energy make up  about 95% of our universe </li></ul><ul><ul><li>70% is dark energy </li></ul>...
<ul><li>Know more about what it isn't than what it is </li></ul><ul><ul><li>Not readily visible </li></ul></ul><ul><ul><li...
<ul><li>Astronomers know dark matter is there by its gravitational effect on the matter that we see, and there are ideas a...
<ul><li>More is unknown than known </li></ul><ul><li>We know how much dark energy  there is because we know how it affects...
<ul><li>In 1998, the Hubble Space Telescope came along and observed distant supernovae that showed that the universe was e...
<ul><li>Dark energy proves that the universe will keep expanding </li></ul><ul><li>Scientists have more to learn about dar...
 
<ul><li>&quot;Dark Energy, Dark Matter — NASA Science.&quot;  NASA Science . N.p., n.d. Web. 27 Jan. 2010. < http://nasasc...
Upcoming SlideShare
Loading in …5
×

Investigating Dark Matter And Dark Energy

1,278 views
1,192 views

Published on

Published in: Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,278
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
17
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • Investigating Dark Matter And Dark Energy

    1. 2. <ul><li>Dark matter and dark energy make up about 95% of our universe </li></ul><ul><ul><li>70% is dark energy </li></ul></ul><ul><ul><li>25% is dark matter </li></ul></ul><ul><ul><li>5% is normal, visible matter </li></ul></ul>
    2. 3. <ul><li>Know more about what it isn't than what it is </li></ul><ul><ul><li>Not readily visible </li></ul></ul><ul><ul><li>It's dark </li></ul></ul><ul><ul><ul><li>Meaning that it's not visible like stars and planets </li></ul></ul></ul><ul><ul><ul><li>It doesn't reflect or emit electromagnetic radiation </li></ul></ul></ul><ul><ul><li>Can only be detected indirectly </li></ul></ul><ul><ul><li>May consist of… </li></ul></ul><ul><ul><ul><li>Dust </li></ul></ul></ul><ul><ul><ul><li>Planets </li></ul></ul></ul><ul><ul><ul><li>Black holes </li></ul></ul></ul><ul><ul><ul><li>Dwarf stars </li></ul></ul></ul><ul><ul><ul><li>Clouds of gas that don’t light up </li></ul></ul></ul>
    3. 4. <ul><li>Astronomers know dark matter is there by its gravitational effect on the matter that we see, and there are ideas about the kinds of particles it must be made of </li></ul>
    4. 5. <ul><li>More is unknown than known </li></ul><ul><li>We know how much dark energy there is because we know how it affects the Universe's expansion </li></ul><ul><li>People were sure that gravity was going to slow the expansion of the universe </li></ul>
    5. 6. <ul><li>In 1998, the Hubble Space Telescope came along and observed distant supernovae that showed that the universe was expanding slower than it is now a long time ago </li></ul><ul><ul><li>People came up with 3 theories </li></ul></ul><ul><ul><ul><li>Result of a long-discarded version of Einstein's theory of gravity </li></ul></ul></ul><ul><ul><ul><li>There was some strange kind of energy-fluid that filled space </li></ul></ul></ul><ul><ul><ul><li>There is something wrong with Einstein's theory of gravity </li></ul></ul></ul><ul><ul><ul><ul><li>Scientists still don't know which theory is correct, but they named the solution dark energy </li></ul></ul></ul></ul>
    6. 7. <ul><li>Dark energy proves that the universe will keep expanding </li></ul><ul><li>Scientists have more to learn about dark matter and dark energy, which will keep them studying for years </li></ul>
    7. 9. <ul><li>&quot;Dark Energy, Dark Matter — NASA Science.&quot; NASA Science . N.p., n.d. Web. 27 Jan. 2010. < http://nasascience.nasa.gov/astrophysics/what-is-dark-energy >. </li></ul><ul><li>&quot;dark matter — Infoplease.com.&quot; Infoplease: Encyclopedia, Almanac, Atlas, Biographies, Dictionary, Thesaurus. Free online reference, research & homework help. — Infoplease.com . N.p., n.d. Web. 25 Jan. 2010. < http://www.infoplease.com/ce6/sci/A0814671.html >. </li></ul><ul><li>&quot;dark matter: meaning and definitions — Infoplease.com.&quot; Dictionary Search Page — Infoplease.com . N.p., n.d. Web. 25 Jan. 2010. < http://dictionary.infoplease.com/dark-matter >. </li></ul><ul><li>&quot;Dark matter.&quot; Science Daily: News & Articles in Science, Health, Environment & Technology . N.p., n.d. Web. 27 Jan. 2010. < http://www.sciencedaily.com/articles/d/dark_matter.htm >. </li></ul><ul><li>Farndon, John. From Ptolemy's Spheres to Dark Energy: Discovering the Universe (Chain Reactions) . Chicago: Heinemann, 2007. Print. </li></ul><ul><li>&quot;Invisible universe: interview with George Smoot - | unesco.org.&quot; UNESCO . N.p., n.d. Web. 29 Jan. 2010. < http://portal.unesco.org/en/ev.php-URL_ID=46036&URL_DO=DO_TOPIC&URL_SECTION=201.html >. </li></ul><ul><li>Sparrow, Giles. Observing the Universe (Secrets of the Universe) . Milwaukee: World Almanac Library, 2006. Print. </li></ul>

    ×