1. News Constellation Quiz lab begins Tonight
You must sign up in advance.
The weather looks promising for the next few days.
Telescope Observing lab begins Monday September 10

2. Questions from Last Time?

3. Astronomy: A Search for Origins!!!
Where did all the structure and organization come from?
How did it emerge over time?
What physics/physical processes were important?
We wish to explain, not just observe.

4. Astronomy: A Search for Origins!!!
Where did all the structure and organization come from?
How did it emerge over time?
What physics/physical processes were important?
Hydrogen + Helium + Gravity ⇨ Stars, Galaxies, and Humans
given about 14 billion years.

5. A Five-Minute History of the Universe
The “Big Bang” brings matter, space and time into existence.
It happened 13.7 billion years ago.
a number now known to better than 1 percent!
The early Universe contained only uniformly distributed Hydrogen and Helium.
Almost immediately gravity begins to form stars and galaxies.
Stars “process” Hydrogen and Helium into heavier elements like Iron, Calcium, and Oxygen.
After 9 billion years of cosmic recycling (4.6 billion years ago) our Sun forms from the “ashes” for previous generations of stars.
At the same time system of planets form from debris left in orbit around the Sun.
Life originates quickly on Earth.
but only becomes “complex” ½ billion years ago.

6. A Five-Minute History of the Universe
The “Big Bang” brings matter, space and time into existence.
It happened 13.7 billion years ago.
a number now known to better than 1 percent!
The early Universe contained only uniformly distributed Hydrogen and Helium.
Almost immediately gravity begins to form stars and galaxies.
Stars “process” Hydrogen and Helium into heavier elements like Iron, Calcium, and Oxygen.
After 9 billion years of cosmic recycling (4.6 billion years ago) our Sun forms from the “ashes” for previous generations of stars.
At the same time system of planets form from debris left in orbit around the Sun.
Life originates quickly on Earth.
but only becomes “complex” ½ billion years ago.

7. A Five-Minute History of the Universe
The “Big Bang” brings matter, space and time into existence.
It happened 13.7 billion years ago.
a number now known to better than 1 percent!
The early Universe contained only uniformly distributed Hydrogen and Helium.
Almost immediately gravity begins to form stars and galaxies.
Stars “process” Hydrogen and Helium into heavier elements like Iron, Calcium, and Oxygen.
After 9 billion years of cosmic recycling (4.6 billion years ago) our Sun forms from the “ashes” of previous generations of stars.
At the same time a system of planets form from debris left in orbit around the Sun.
Life originates quickly on Earth.
but only becomes “complex” ½ billion years ago.

8. A Five-Minute History of the Universe
The “Big Bang” brings matter, space and time into existence.
It happened 13.7 billion years ago.
a number now known to better than 1 percent!
The early Universe contained only uniformly distributed Hydrogen and Helium.
Almost immediately gravity begins to form stars and galaxies.
Stars “process” Hydrogen and Helium into heavier elements like Iron, Calcium, and Oxygen.
After 9 billion years of cosmic recycling (4.6 billion years ago) our Sun forms from the “ashes” for previous generations of stars.
At the same time system of planets form from debris left in orbit around the Sun.
Life originates quickly on Earth.
but only becomes “complex” ½ billion years ago.

9. A Five-Minute History of the Universe
The “Big Bang” brings matter, space and time into existence.
It happened 13.7 billion years ago.
a number now known to better than 1 percent!
The early Universe contained only uniformly distributed Hydrogen and Helium.
Almost immediately gravity begins to form stars and galaxies.
Stars “process” Hydrogen and Helium into heavier elements like Iron, Calcium, and Oxygen.
After 9 billion years of cosmic recycling (4.6 billion years ago) our Sun forms from the “ashes” for previous generations of stars.
At the same time system of planets form from debris left in orbit around the Sun.
Life originates quickly on Earth.
but only becomes “complex” ½ billion years ago.

10. A Five-Minute History of the Universe
If this history could be compressed into a single year:
The Universe starts on January 1...
The Solar System forms in early-September

11. A Five-Minute History of the Universe
If this history could be compressed into a single year:
The Universe starts on January 1...
The Solar System forms in early-September
Life originates in mid-September
Life becomes complex in mid-December

12. A Five-Minute History of the Universe
If this history could be compressed into a single year:
The Universe starts on January 1...
The Solar System forms in early-September
Life originates in mid-September
Life becomes complex in mid-December
Dinosaurs roamed the Earth for two weeks between December 10 and December 25

13. A Five-Minute History of the Universe
If this history could be compressed into a single year:
The Universe starts on January 1...
The Solar System forms in early-September
Life originates in mid-September
Life becomes complex in early-December
Dinosaurs roamed the Earth for two weeks between December 10 and December 25
Humanity (intelligence?) arose at 10 p.m. on December 31
Recorded history began around 11:59:45 on December 31

15. Human Biases
Location, Wavelength, and Time to name a few

16. Human Biases
Location

17. Human Biases
Location

18. Human Biases
Location

19. Human Biases
Location

20. Human Biases
Location
High density of matter compared with intergalactic space.

21. Human Biases
Location

22. Human Biases
Wavelength

23. Human Biases
Wavelength

24. Human Biases
Wavelength

25. Human Biases
Time