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A Walk through the Cosmos
Transcript of A Walk through the Cosmos
The Big Bang
Stars are born from Nebulae
Pillars of Creation
Death of a Star
Galaxies contain varying numbers of planets, star systems, star clusters and types of interstellar clouds
Types Of Galaxies
Spiral Galaxy - Andromeda Galaxy
Galaxy - M110
Lenticular Galaxy -
Our Home Galaxy - The Milky Way
What does Expansion mean?
Currently accepted - Lambda CDM Model
Expansion and relativity
How Much Do We Know?
Measuring the expansion
Where is the Universe expanding into?
What is the Universe made of?
What is this
Uni- or Multi- Verse?
Multiple universes have been hypothesized in cosmology, physics, astronomy, religion, philosophy, psychology and science fiction.
Bubbles Within a Bubble
Different Types of Bubbles
Or perhaps a Cascading Universe
and so on...
What's in store for the Universe?
In theory there are two possible futures for the Universe.
BIG CRUNCH BIG FREEZE
Mass of Universe greater than “critical density”
Oscillation between “Big Bang” and “Big Crunch” forever
Mass of Universe less than “Critical density”- Hyperbolic
Mass of Universe exactly the “Critical density”- Flat
Dark and Cold place
This is our place in
the vast Universe
Planetary nebula called M57 with its White Dwarf in the middle