Flashcards
Universe origin (7)
Cards in this deck (11)
- 1How big is the Universe?93 Ga light years diameter
- 2What is its the universe's shape?A sphere
- 3About how many galaxies exist in the observable Universe?~2 trillion large galaxies + > 7 trillion dwarf galaxies
- 4☼The Universe is composed of what 3 components?☼Dark energy - 68-73% total mass-energy
Dark matter - 23-27%
Normal Matter (everything we know) - ~5% - 5Which of the 3 components is the most abundant? Least abundant?Dark Energy - 68-73%
Normal matter - ~5% - 6How old is the Universe?-13.798 to 13.799 Ga
- 7How did the Universe form?Started with a huge inflation, during which all mater condensed from a quark-gluon plasma.
- 8What evidence indicates this origin of universe formation?-Universe is expanding;
-Cosmic background radiation;
-Composition of normal matter (H & He) - 9Where did the Universe come from?An unstable, ultra high-energy virtual particle that spontaneously appeared from a pre-existing quantum vacuum.
- 10What was likely present before the Big Bang?A quantum vacuum?
- 11How will the Universe end?Heat death
-Or? gravity and universal expansion will result in billions of ultra heavy black holes that are ~infinitely far away form each other.