Presentation is loading. Please wait.

Presentation is loading. Please wait.

Life Sustaining What’s needed of stars? Stablility.

Similar presentations


Presentation on theme: "Life Sustaining What’s needed of stars? Stablility."— Presentation transcript:

1 Life Sustaining What’s needed of stars? Stablility

2 Worthless Stars

3 Unstable

4 Life Sustaining What’s needed for stars? Stablility Long Life

5 Worthless Stars Unstable Short Life

6 Too Hot Too Cold Life Zone

7 Life Zone Life Zone Too Close Tidal Lock One Side Hot Other Side Cold One Side Baked Dry Other Side Glaciers Thin Atmosphere

8 Life Sustaining What’s needed for stars? Stablility Long Life Life Zone Far From Star

9 Worthless Stars Unstable Short Life Life Zone Too Close

10 H2H2 He CH 4 NH 3 H2OH2O N2N2 O2O2 CO Average Speeds at Room Temperature

11 Jupiter Earth Venus Neptune Uranus Saturn H2H2 He CH 4 NH 3 H 2 O Holding an Atmosphere

12 Earth Venus Mars Titan Mercury CH 4 NH 3 H 2 O N 2 O 2 CO 2 H2H2 He Holding an Atmosphere

13 Titan Mercury Moon Ceres Pluto Triton CH 4 NH 3 H 2 O N 2 O 2 CO 2 Holding an Atmosphere

14 Making Contact seeds of life evolution civilization technology

15

16

17 Two Types of Planets Terrestrial Meteor Craters / Erosion Smaller Jovian Only Clouds Visible Much Bigger Wed 9:20

18 Jovians are Bigger

19 Two Types of Planets Terrestrial Meteor Craters / Erosion Smaller Rocky High Density Jovian Only Clouds Visible Much Bigger Mostly Gas Low Density

20 Terrestrials are more Dense

21 Two Types of Planets Terrestrial Meteor Craters / Erosion Smaller Rocky High Density Low Mass Jovian Only Clouds Visible Much Bigger Mostly Gas Low Density High Mass

22 Jovians are more Massive

23 Two Types of Planets Terrestrial Meteor Craters / Erosion Smaller Rocky High Density Low Mass Few Moons Jovian Only Clouds Visible Much Bigger Mostly Gas Low Density High Mass Many Moons

24 Jovians have more Moons

25 Two Types of Planets Terrestrial Meteor Craters / Erosion Smaller Rocky High Density Low Mass Few Moons No Rings Jovian Only Clouds Visible Much Bigger Mostly Gas Low Density High Mass Many Moons Rings

26

27 Jovians are farther from the sun.

28 What About Pluto?

29 collapse to disk  gravity centrifugal effect

30 Accretion Process by Which Many Little Things Become Fewer, Bigger Things Condensation Cold Weld

31 Tues 12:15

32 Accretion Gravity Planetesimals Jovian Atmospheres

33  sweeps up dust while orbiting collisions slow orbit spirals in protosun becomes sun solar wind clears dust planetesimals exposed to heat and solar wind formation limited no more dust

34 dust free zone expands atmosphere reaches escape velocity solar wind blows away atmosphere planetesimal exposed to heat and solar wind  jovian planet becomes terrestrial orbit stabilizes

35 H2H2 He CH 4 NH 3 H2OH2O N2N2 O2O2 CO Average Speeds at Room Temperature

36 Jupiter Earth Venus Neptune Uranus Saturn H2H2 He CH 4 NH 3 H 2 O Holding an Atmosphere

37 bombardment melts surface heats impact site

38 Making Terrestrials Solar Wind Loss of Atmosphere Bombardment Fission Differentiation

39

40

41

42 New Atmosphere Bombardment Slows Surface Hardens Molten Interior Fission  Gas Outgassing CO 2 N 2 SO 2 O2O2

43 fission outgassing

44 Earth Venus Mars Titan Mercury CH 4 NH 3 H 2 O N 2 O 2 CO 2 H2H2 He Holding an Atmosphere

45 Titan Mercury Moon Ceres Pluto Triton CH 4 NH 3 H 2 O N 2 O 2 CO 2 Holding an Atmosphere

46 Moon Origin Fission Coformation Capture Impact

47 Fission Moon and Earth split Why?

48 Coformation Moon and Earth formed simultaneously as Binary Planet Why is the density different? 5.5g/cm 3 3.3g/cm 3

49 Capture Earth and moon formed far apart passed close Earth captured moon unlikely events required inclination likely to be high

50 Impact

51

52

53

54 Sunlight bombards planet. With the right temperature, clouds form from water vapor. Clouds reflect sunlight, lowering temperature. The lower temperature causes more clouds to form.

55 UV CO 2 N 2 carbon based life plant life photosynthesis limestone rises saturated oxidizes O2O2 O 2 23%76% 2 O 3 3 UV ozone Wave action dissolves CO 2 in ocean.


Download ppt "Life Sustaining What’s needed of stars? Stablility."

Similar presentations


Ads by Google