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Journey through SPACE and TIME. Who Am I? What do I do?

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Presentation on theme: "Journey through SPACE and TIME. Who Am I? What do I do?"— Presentation transcript:

1 Journey through SPACE and TIME

2 Who Am I?

3 What do I do?

4 1. Journey through space 2. Journey through time

5 Destination 1 Nearest neighbour: the Moon

6

7 Space travel: speed? Cruising speed ~ 500Mph Cruising speed ~ 17000Mph Bristol to florida in 12 mins!

8 How long do you think it takes to get from Earth to the Moon? miles 15 hours in our shuttle

9

10 Destination 2 Nearest star...

11 Sol?Alpha Centauri? Betelgeuse? Proxima Centauri?

12 Why does the Sun shine?

13 Nuclear FUSION Releases more energy Harder to control! Nuclear FISSION: Splitting the atom CONNECTION???

14 Destination 3 Nearest planet?

15 ? ? ? ? ? ?

16 Earth Mercury Mars The Sun Venus

17 Mars-Earth closest approach 27 August million miles! In our space shuttle days! In reality... MRO took 7 months...

18 Fly over the Martian surface

19 We need to put our foot down!

20 Solar System Fly-by

21 Jupiter: largest planet 63+ moons! Picture: Voyager 1979

22 Saturn Everyones favorite! Picture: Cassini 2004

23 Uranus: Also a gas giant Spins on its side! Picture: Voyager

24 Neptune: Also a gas giant Uranus twin! Picture: Voyager

25 Pluto???

26

27 Relative sizes

28 Escaping the Solar System... Pluto is 3660 million miles away... It will take us 25 years! Upgrade... Light speed: 670 million MPH 5 hours to get to pluto!

29 Destination4 Nearest star: Proxima Centauri

30 Travel Time: 4 Years, at light speed! Proxima Centauri Nearest star with planets: Epsilon Eridani 10 Years, at light speed! (400,000 yrs in a shuttle...) ?

31 Ever seen this?

32 You are here! 100 billion stars

33 Destination 5 Centre of the Galaxy

34 What will we find? 26,000 years...

35 BLACK HOLE!!! Death of star: supernova

36 How do we know ??

37 impressive Black Holes

38 Stars CMB AGN Planets Galaxies Clusters REDSHIFT Stars CMBAGN Planets Galaxies Clusters DISTANCE FROM US

39 Destination 6 Andromeda Galaxy

40 Closest similar galaxy Largest in local group 2.5 million light years away

41 Zoom out: Hubble Deep field A 2 millionth of the sky!!!

42 Galaxy cluster OPTICAL light

43 Stars CMB AGN Planets Galaxies Clusters REDSHIFT Stars CMBAGN Planets Galaxies Clusters DISTANCE FROM US

44 Galaxy cluster X-rays

45 Galaxy cluster Radio waves

46 Zoom out again - galaxies form filaments and voids The whole Universe is made up this way Time for us to go home... Fly through the cosmic web

47 zoom back to Earth...

48 1. Journey through space 2. Journey through time

49 IN THE BEGINNING...

50 EVERYTHING!

51

52 ENERGY INCREASING, BECOMING LIKE A BOMB... STARTS EXPANDING...

53 Tick tick tick...

54 BOOM!

55 The Big Bang Not really an explosion, Universe expanded rapidly as a whole (Universe is still expanding today as a result of the Big Bang) Matter was created in the form of tiny particles (protons, neutrons, electrons) Too hot for normal stuff to form (eg atoms, molecules)

56

57 COSMIC SOUP

58 PROTON NEUTRON ELECTRON COSMIC SOUP

59 Universe much cooler, atoms start to form... Hydrogen, Helium, normal stuff 300,000 Years Later...

60

61 Universe is now a GAS

62 HYDROGEN HELIUM Universe is now a GAS

63

64 GRAVITY!

65 Gravitational Collapse We started with a uniform gas Small regions became more dense The denser regions had larger gravity and started to pull other particles towards them The gaseous Universe began to look clumpy

66 Stars, galaxies Temperature increases FUSION! A star is born Stars congregate Together to form Galaxies.. Galaxies Also congregate...

67 The Universe today

68 Future? The Universe is still expanding All galaxies are moving apart The explosion of the big bang is still happening! It may contine expanding forever Or is may stop expanding, and fall inwards in a big CRUNCH!

69 THE END


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