life in exotic water worlds?

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Life in exotic water worlds? Exotic water worlds How life-friendly is an ocean deeper than on Earth? Lena Noack, Dennis Höning, Helmut Lammer and Jan H. Bredehöft 1 May 2014 EGU Press Conference „Fingerprints of life: from the early Earth to outer space“

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Life in exotic water worlds?. Exotic water worlds H ow life-friendly is an ocean deeper than on Earth?. Lena Noack, Dennis Höning , Helmut Lammer and Jan H. Bredehöft 1 May 2014 EGU Press Conference „ Fingerprints of life: from the early Earth to outer space “. Ocean Planets. - PowerPoint PPT Presentation

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Page 1: Life in exotic water worlds?

Life in exotic water worlds?Exotic water worlds

How life-friendly is an ocean deeper than on Earth?

Lena Noack, Dennis Höning, Helmut Lammer and Jan H. Bredehöft

1 May 2014 EGU Press Conference

„Fingerprints of life: from the early Earth to outer space“

Page 2: Life in exotic water worlds?

Ocean Planets

Water is needed for life (habitable zone)

BUT: Is more water even better for life?

NO!

Page 3: Life in exotic water worlds?

Water or Ice?

1) Entirely liquid ocean layer2) Sandwich-layer: ice surrounded by water3) Water layer above ice layer

Page 4: Life in exotic water worlds?

Cooking recipe for lifeLife also needs:

- Energy source (solar, thermal or chemical energy)- Minerals, building blocks of life- A place of reaction

The ocean floor is ideal for origin of life!

Page 5: Life in exotic water worlds?

Which Ocean Layer will be Liquid?

hot

cold

shallow

deep

large

small

Surface Temperature

Ocean Thickness

Planet Size

Page 6: Life in exotic water worlds?

More information

PICO-Presentation

Noack et al.

Fr., 13:30-15:00

PICO spot 1, EGU2014-14725