SEARCHING FOR PLANETS
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SEARCHING FOR PLANETS AND LIFE. SIMON GOODWIN Sheffield John Gribbin Sussex. 1995: 2005:. ONE. 150 PLANETS. THE PROBLEM WITH PLANETS…. …IS THEY’RE TOUGH TO SEE. A PLANET AROUND 51 PEG. EARTH FROM 30LYR. O3. CO2. H2O. IT’S LIFE JIM, BUT IT IS AS WE KNOW IT?. CARBON-BASED?.

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SEARCHING FOR PLANETS AND LIFE

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Searching for planets and life

SEARCHING FOR PLANETS

AND LIFE

SIMON GOODWIN

Sheffield

John Gribbin

Sussex


Searching for planets and life

1995:

2005:

ONE

150 PLANETS


Searching for planets and life

THE PROBLEM WITH PLANETS…

…IS THEY’RE TOUGH TO SEE


Searching for planets and life

A PLANET AROUND 51 PEG


Searching for planets and life

EARTH FROM 30LYR

O3

CO2

H2O


Searching for planets and life

IT’S LIFE JIM, BUT IT IS AS WE

KNOW IT?

CARBON-BASED?

WATER-BASED?

OXYGEN-USING?


Searching for planets and life

IS LIFE COMMON?

LIFE APPEARED IN ~100MYR

BUT -

IS INTELLIGENT LIFE COMMON?

THAT TOOK ~4500MYR


Searching for planets and life

THE FERMI PARADOX

60000 LYR

10 MYR TO COLONISE

THE GALAXY


Searching for planets and life

GALACTIC ZOO?

INTERSTELLAR TRAVEL

IS TOO DIFFICULT?

NARROW WINDOW IN TIME?

SELF-DESTRUCT?

THEY’RE JUST NOT THERE?


Searching for planets and life

THE GOLDILOCKS PLANET

‘COMET HOOVER’

THE MOON:

STABILISES AXIS

CAUSES TIDES (x2)

THIN CRUST

A QUIET SUN


Searching for planets and life

ARE WE THE FIRST?

THE SUN IS VERY METAL

RICH FOR ITS AGE


Searching for planets and life

WE ARE ONLY 10-20 YEARS AWAY

FROM DISCOVERING EARTH-LIKE

PLANETS AND MAYBE FINDING

LIFE ON THEM…


That s all

THAT’S ALL

(For now)


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