How big is the universe a photographic tour
Download
1 / 60

How BIG is the Universe? A Photographic Tour - PowerPoint PPT Presentation


How BIG is the Universe? A Photographic Tour. Apollo 17 Lunar Rover (scale: a few metres). Space Shuttle, Columbia (scale: 100 metres). Barringer Crater, Arizona (1.2 km diam, 200 m deep - 50 m diam asteroid at 11 km/s). Earth (diam 12,756 km). Cloud covered Venus (0.95 Earth diameters).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

How BIG is the Universe? A Photographic Tour

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


How BIG is the Universe?A Photographic Tour


Apollo 17 Lunar Rover(scale: a few metres)


Space Shuttle, Columbia(scale: 100 metres)


Barringer Crater, Arizona(1.2 km diam, 200 m deep - 50 m diam asteroid at 11 km/s)


Earth(diam 12,756 km)


Cloud covered Venus(0.95 Earth diameters)


Mercury(0.38 Earth diameters)


The Moon(0.27 Earth diameters)


The Sun(diam 1 392 000 km or 109 Earth diameters,distance 150 000 000 km or 1 astronomical unit - 1 AU)


Eclipse of the Sun by the Moon as seen from Antarctica(both subtend almost exactly the same angle of half a degree at the Earth)


Mars - the Red Planet(0.53 Earth diam)


Surface of Mars


Phobos and Deimos(max lengths 28 and 16 km)


Orbits of the planets to scale


Asteroid Gaspra(20 km long)


Jupiter and its Great Red Spot (11.2 Earth diam,distance 5.2 AU)


Jupiter’s cloud belts as seen by the Cassini spacecraft


Jupiter with (top to bottom)Io, Europa, Ganymede and Callisto


Io and its sulphur volcanoes(0.28 Earth diam, 1.04 Moon diam)


Ganymede, largest moonin the Solar System (0.41 Earth diam,1.51 Moon diam)


Not all Jupiter’s moons are large:Thebe (100 km), Amalthea (270 km max) and Metis (40 km)


Saturn and its beautiful rings(9.4 Earth diam at 9.6 AU)


Orbits of the planets to scale


Uranus, the tilted planet(4.0 Earth diamat 19.2 AU)


Neptune(3.9 Earth diamat 30.1 AU)


Pluto and Charon - double planet(0.18 and 0.09 Earth diam1.54 Earth diam apartat 29.7 to 49.4 AU from Sun)


Comet Hale-Bopp in March 1997A comet tail can be over 1 AU long,but its nucleus measures only a few km across


Comet Halley and the Milky Way


Southern Pinwheel Galaxy15 million light years away and similar to the Milky Way


How the Milky Way might look seen edge-on

Sun

160 million light years


Size of the Milky Way Galaxy


Sombrero Galaxy


Whirlpool Galaxy


Andromeda Galaxy(2.5 million light years away -most distant naked eye object)


Giant Elliptical Galaxy M87in Virgo Cluster50 million light years away


Virgo Cluster of Galaxies1500 galaxies9 million light years across50 million light years away


ComaCluster


Hubble Deep Field showing galaxies over 10 billion light years away (looking back in time to near the beginning of the universe)


How the Milky Way might look seen edge-on

Sun

160 million light years


The Milky Way as seen from Australia(Notice the pink nebulae where new stars are forming)


Milky Way with Faulkes Telescope in Australia in foreground


The constellation of Orionand the Milky Way(The bright stars we see here are no more than a few hundred light years away)

Betelgeuse

Rigel

OrionNebula


Orion Nebulaa small star forming region about 1 light year across


New solar systems forming in Orion


New stars forming in pillars of molecular hydrogen and dust that are light years in length (in Eagle Nebula)


Pleiades and Hyadesstar clusters(with Jupiter and Saturn)


Betelgeuse - a Red Supergiant star(big enough to reach the orbit of Jupiter)


Life Cyclesof Stars in Outline


Helix Planetary Nebula (1.5 light years across)

White dwarf star(remains of core of star and about size of the Earth)

Planetary nebula(remains of outer layers of star)


Cat’s Eye Planetary Nebula and white dwarf(A solar mass white dwarf would be only as big as the Earth)


Cocoon Planetary Nebula


Ring Planetary Nebula


Abell Planetary Nebula


Crab Nebula a supernova remnant - remains of a star that exploded10 light years across

neutron star about 10 kmacross is at centre (not visible)


Vela or GumNebula


A Black Hole(“Radius” of a 10 solar mass black hole would be only 30 km)


A black hole a few million times the mass of the Sun lurks at the centre of our galaxy and causes nearby stars to orbit very rapidly


How Orion would look if you were near a black hole (computer simulation)


Gravitational lensing by a galaxy cluster 2 billion light years away bends light from a galaxy so far away that its light has been travelling for 95% of the age of the Universe


The End


ad
  • Login