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Extra-terrestrial life: Is there anybody out there?

Extra-terrestrial life: Is there anybody out there?. Reach for the Stars. Dr Martin Hendry University of Glasgow. Is there Anybody Out There?. Life in the Solar System?. Extra-Solar Planets. Searching for Life. Life in the Solar System. Runaway Greenhouse Effect.

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Extra-terrestrial life: Is there anybody out there?

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  1. Extra-terrestrial life: Is there anybody out there? Reach for the Stars Dr Martin Hendry University of Glasgow

  2. Is there Anybody Out There? Life in the Solar System? Extra-Solar Planets Searching for Life

  3. Life in the Solar System

  4. Runaway Greenhouse Effect

  5. Formation of the Moon: Impact from Mars-sized planetesimal during first aeon.

  6. Impact energy = 1 million million megatons 5 billion cubic miles of the crust sprayed into space Atmosphere ejected into space Ring of ejecta coalesces into Moon

  7. Is there life on Mars?…

  8. Is there life on Mars?…

  9. Mars 2004: • Mars Express ( + Beagle 2) • Spirit + Opportunity

  10. Jan 23rd 2004: Mars Express Orbiter detects water ice at the South Pole of Mars.

  11. Jan 23rd 2004: Mars Express Orbiter detects water ice at the South Pole of Mars.

  12. Jan 23rd 2004: Mars Express Orbiter detects water ice at the South Pole of Mars. CO2 Visible light H2O

  13. Images suggest flowing water on Mars in the past Mars Earth Water on Mars

  14. 2mm

  15. The moons of Jupiter

  16. Isaac Newton: 1642 – 1727 AD The Principia: 1684 - 1686

  17. The tidal pull of the Moon on the Earth

  18. Galileo’s Moons

  19. Inside Europa Could there be life?…..

  20. EXTRA-SOLAR PLANETS The stars are VERY far away. The nearest star (after the Sun) is about 40 million million km from the Earth. It takes light more than 4 years to travel this distance.. If the distance from the Earth to the Sun were the width of this screen, the nearest star would be in Paris !!!!

  21. Wobbling stars: the key to finding extra-solar planets Planets are too faint to see directly but Planets and stars orbit their common centre of mass - so stars wobble

  22. The Sun’s “wobble”, due to Jupiter, seen from 30 light years away = width of a 5p piece in Baghdad

  23. Doppler Shift

  24. Star Laboratory

  25. The origin of spectral lines

  26. Absorption e - e -

  27. Emission e - e -

  28. Star Laboratory

  29. 51 Peg – the first new planet

  30. What have we learned about exoplanets? Highly active, and rapidly changing, field Aug 2000: 29 exoplanets

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