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

Questions from Last Time?

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.

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.

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.

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.

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.

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.

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.

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

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

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

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

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

Human Biases Location

Human Biases Location

Human Biases Location

Human Biases Location

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

Human Biases Location

Human Biases Wavelength

Human Biases Wavelength

Human Biases Wavelength

Human Biases Time