SEARCHING FOR PLANETS AND LIFE SIMON GOODWIN Sheffield John Gribbin Sussex.

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Presentation transcript:

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

H2O O3 CO2 EARTH FROM 30LYR

IT’S LIFE JIM, BUT IT IS AS WE KNOW IT? CARBON-BASED? WATER-BASED? OXYGEN-USING?

IS LIFE COMMON? LIFE APPEARED IN ~100MYR BUT - IS INTELLIGENT LIFE COMMON? THAT TOOK ~4500MYR

THE FERMI PARADOX LYR 10 MYR TO COLONISE THE GALAXY

GALACTIC ZOO? INTERSTELLAR TRAVEL IS TOO DIFFICULT? NARROW WINDOW IN TIME? THEY’RE JUST NOT THERE? SELF-DESTRUCT?

THE GOLDILOCKS PLANET ‘COMET HOOVER’ THE MOON: STABILISES AXIS CAUSES TIDES (x2) THIN CRUST A QUIET SUN

ARE WE THE FIRST? THE SUN IS VERY METAL RICH FOR ITS AGE

WE ARE ONLY YEARS AWAY FROM DISCOVERING EARTH-LIKE PLANETS AND MAYBE FINDING LIFE ON THEM…

THAT’S ALL (For now)

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