Bio/EPS/Phys 210 Epic of Evolution The Universe Today.

Bio/EPS/Phys 210Epic of Evolution

The Universe TodayThe Universe TodayThe Universe TodayThe Universe Today


Getting a sense of scaleGetting a sense of scaleGetting a sense of scaleGetting a sense of scale

“Powers of 10”(1977) by Ray and Charles EamesNarrated by Philip Morrison

http://powersof10.com/index.php?mod=watch_powersof10

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

http://powersof10.com/index.php?mod=watch_powersof10


Km Light years

Radius of Earth 6378

Earth Moon distance 384,000

Earth Sun distance 1.5 X 108 (1 a.u)

Nearest star 4.1 X 1012 4.3

Center of the milky way 2.5 X 1017 26000

Nearest galaxy (Andromeda)

2 X 106 (2 Mly)

Virgo Cluster 5.3 X 107 (53 Mly)

Quasars 0.8 - 10 Bly

Cosmic background 13 Bly

Visible universe 13.2 Bly1 ly = speed of light X 1 year = (3 X 105 km/s) X (3.15 X 107 s)

= 9.5 X 1012 km

Getting a sense of scaleGetting a sense of scaleGetting a sense of scaleGetting a sense of scale


The solar systemThe solar systemThe solar systemThe solar system



Oops! Sorry Pluto!

Footnote: over 400 exoplanets have now been detected!Footnote: over 400 exoplanets have now been detected!


Stars & the Milky WayStars & the Milky WayStars & the Milky WayStars & the Milky Way

















1011 stars100,000 ly acrossSpiral arms

1011 stars100,000 ly acrossSpiral arms


Galaxies & ClustersGalaxies & ClustersGalaxies & ClustersGalaxies & Clusters

AndromedaAndromedaM 31M 31

Virgo ClusterVirgo Cluster Hydra Cluster Hydra Cluster


Gas & DustGas & DustGas & DustGas & Dust








ExoticaExoticaExoticaExotica

QuickTime™ and aYUV420 codec decompressor




SupernovaeNeutron starsPulsarsBlack Holes


ExoticaExoticaExoticaExotica

Colliding galaxiesSupermassive black holesColliding galaxiesSupermassive black holes









3 billion solar masses3 billion solar masses

4 million solar masses4 million solar masses

A SMBH in theMilky WayA SMBH in theMilky Way






ExoticaExoticaExoticaExotica QuasarsQuasars

Isotropy of the universeIsotropy of the universeIsotropy of the universeIsotropy of the universeSystem Distance Structure

Solar system 109 km Orbits

Galaxy 26 kly Spiral arms, core

Local group 3 Mly 17 galaxies

Virgo cluster 65 Mly >2000 galaxies

Local supercluster 300 Mly 100 clusters

Distant clusters 3 Bly Isotropic

Quasars 10 Bly Isotropic

CMB 13 Bly Isotropic to 10-5


Measuring distance in astronomyMeasuring distance in astronomyMeasuring distance in astronomyMeasuring distance in astronomy

1 arcsecond

1 a.u

1 parsec

1 parsec = 3.26 ly

Parallax


Bio/EPS/Phys 210 Epic of Evolution The Universe Today.

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