Transcript Where We Were to Where We Are: The History of Astronomy

Where We Were to Where We Are:
The History of Astronomy
May 19th 2015
Announcements
• Your post-test will be Thursday May 19th
• Today is your last day to present your 2nd brief
Early Astronomy Questions
• People did not have youtube,
I-Pads, phones, etc.
• To entertain themselves
they looked at the stars
Constellations
The Zodiac Constellations
What They Thought… Geocentric Model
Why don’t we see the same
constellations all year long?
Clue #1 That we are
not at the center of
the universe
Galileo
• If we are at the center
of the universe, how
can Jupiter have moons?
• This was really
controversial!
• Clue # 2 that we are
not at the center of
the universe
Foucault’s Pendulum
Clue #3 that the
Earth is not at the
center of the
Universe
Heliocentric Model
• This model put
the Sun in the
center of the
solar system
• The earth
rotates around
its axis and
revolves around
the sun
Astronomy Today
• Today’s telescopes are
much bigger, more
powerful and can see
in many wavelengths
This is How We Know What We Know
Fusion in Super Giants
Supernova
•Gravitational Collapse
of a Star due to
extreme pressure on
the core.
•This stellar explosion
sends shockwaves into
space (gamma rays, xrays)
Supernovas can become Black Holes or
Neutron Stars
• Black holes
– Gravity has collapsed
so much that nothing
can escape it’s pull,
not even light
• Neutron Stars
- Remaining core
after a supernova
- They are the
densest and
smallest stars
Questions?
Responsibility Team Section 2
Team 1
Team 2
Team 3
Team 4
Team 5
Team 6
Anam
Mikauly
Chris
Dajana
Jennifer
Daze
Junior
Ramzi
Sarmad
Keny
Yanvier
Mosammat
Victoria
Abdullah Z.
Besare
Humayera A.
Maridania
Perla
Jubayer
Geovani
Abdullah N.
Kaylin
Smarlyn
Seme
Kagbe
Laura
Blendi
Jokely
Himyard
Earth
Milky Way Galaxy
Solar System
Observable Universe
Astronomers Noticed a Doppler Effect
Spectroscope
• An instrument used
to see which
wavelengths of light
are absorbed by
specific elements
known to be in space
Every Element is Different
Elements absorb light at specific wavelengths of
light…it is like a Fingerprint
Redshift
Cosmic Background Radiation
If Everything is Moving Away…
• There must have been a beginning
The Big Bang
Where We Are
• Most of what we know about Astronomy and
Space we learned in the last 20 years
• In your lifetimes there will be much, much
more that we understand and learn
• Never stop asking questions and wondering
why? And how?
• This is how we got to where we are today
2027?
Responsibility Teams Section 1
Team 1
Team 2
Team 3
Team 4
Team 5
Antoneta
Megany
Alimatou
Thanya
Robert
Zoha
Obniel
Maisha
Sharna
Daiana
Misha
Gabriela
Khady
Sadia
Henood
Keyzie
Carolina
Harold
Kimberly
Reyson
Sandeilis
Marbelin
Scarlett
Nathi
Responsibility Team Section 2
Team 1
Team 2
Team 3
Team 4
Team 5
Team 6
Anam
Mikauly
Chris
Dajana
Jennifer
Daze
Junior
Ramzi
Sarmad
Keny
Yanvier
Mosammat
Victoria
Abdullah Z.
Besare
Humayera A.
Maridania
Perla
Jubayer
Geovani
Abdullah N.
Kaylin
Smarlyn
Seme
Kagbe
Laura
Blendi
Jokely
Himyard