the vast universe
TRANSCRIPT
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The Vast Universe
Premana W. Premadi
Bosscha Observatory & Dept. of Astronomy
Institut Teknologi Bandung
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UnderstandingThe Self
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Our Sun
Understanding our way of looking
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Where are we?
Cassini 2006
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countrysidenight sky
Our eyes
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The Southern Sky
Using a small telescope
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Stars are born in blanket of dust
Hubble Space Telescope
Stars chemically enrichinterstellar space
Stars are natural nuclear cauldron
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Quantum Physics: Fundamental Particles and PhotonsAtom, Nuclear Reaction, Chemical Elements, Photon productions
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Hubble Space Telescope
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Kingdom of
Galaxies
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Most Recent Galaxy Surveys
Appearance of galaxies depend on observation wavelength
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Stars at the centerof our Milky Way
Accurate prediction of position and orbital velocityNobel Prize 2020
Black Holeat the center of our Galaxy
Einstein’s Theory of General Relativityfrom ideas to formulation to searching for evidence
PREDICT+ WAIT
CONFIRMATION
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M87ChandraX-ray
800 tahun cahaya
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Black Hole at the center of
M87
COLLABORATION
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Trusting
mathematical logic
isuniversally
true…
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… and
the laws
of physics
are universally
validdF=0
d*F=J
𝑅μν −1
2𝑔μν𝑅 = 8π𝑇μν
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…then we have a compelling scientific story of the Universe
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Is Our Universe the only Universe?
How would we know?
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Can we?
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Life – Consciousness – Mind ???
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But, what is LIFE?How? When? Where else?
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Intelligent Life Any LifeBlack Marble Blue Marble
Signature of Life?
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Searching for Exoplanets
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How typical are we?
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ALMA and VLBI (radio)HST (optic)
Formation Process
STARand
“Stellar System”
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Life on Earth ~ 2.2 Billion Year Process
Bacterial photosynthesis started
2.5 billion years ago
CO2 + H2O + light → CH2O + O2
O2 enabled the production of ozone (O3)
Protect Earth from high energy rays
complex creatures could survive and thrive
OxygenA biomarker?
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On EarthSimple creatures survive everywhere
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How probable is finding intelligent life?
New paradigm: dynamical regulation within space-time :
fine-tuned interplays between order and chaos (Scharf, 2015)
→ The condition for causal relation might be buried in the
probability parameter in a complex hierarchical systemThe possibility of a planet to harbour life is not a linear consequence of it residing in a habitable zone.
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Kivelson (2017)
EUROPA: Jie et al (2017)Enceladus water plumes
VOYAGER
Lookingfor
water
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ConnectionsCreate
ComplexitiesCreate
Connections...
Dynamical Analysis In Complex System:
Identifying the members & their roles
Identifying the driving parameters
Checking for critical condition for emergence
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Self Organization dan Emergent Phenomena
“Rule” for every bird:- avoid dense groups- follow the closest group- direct motion to centre
Individual participation in community
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≈ hundreds of billions
Number of stars in Whirlpool galaxy
Number of neurons in human brain
Features and Functions are constructed from
connections
Safety in numbers?
Yu-Chi Sun, 2021
Hubble Space Telescope
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!!! Earth has been supporting life to survive, thrive, and evolve !!!
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The drives of dynamics?
COMPLEXITY
EMERGENT PHENOMENA
Accurate long term predictionis impossible
Crucial to identify:key elements and key processes
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ANTHROPOCENE
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#MeToo
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Anthropocene?
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Earth Capacity to Support Life?Are we there yet?
Frank & Sullivan, 2013
SWEIT (Species With Energy-Intensive Technology)
Life Expectancy: Astrobiology-based dynamical model
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Do we just want to know more? Explore
Or do we want more? Exploit
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AstroethicsHow to meet and greet aliens?
What guides our priority?Our own survival OR survival of the world?
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Messaging?
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Anthropocentrism Cosmocentrism?
Laniakea
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CosmicConciousness
• Real connection to the Universe
• From the tiniest to the greatest
• Age of existence 13,7 billion years
• Human experience: hundreds of thousands years
• Role of human? Reciprocal?
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If human has the unique ability to holistically reflect and perceive,then we must have universal notion of peace and kindness as our virtue