July 7, 2011

The Logarithmic Map of the Universe
[ stars with known exoplanets highlighted ]

Just a quick post to highlight the presence of markers for the known exoplanets within this "Logarithmic Map of the Universe". The stars with known exoplanets are in the middle part of the strip. [ click the links below to access other resolutions of the map ]

In a quick glance, this map gives an idea about how far away our currently known exoplanets are, compared with other objects in the known universe.

For example, you can see that OGLE 2003-BLG-235 is the farthest from earth, and the one closest to the center of the Milky Way compared with other known exoplanet-hosting stars.

The logarithmic property of the map is best understood by taking note of the labels on the left side of the map, where the units increase from kilometers, to AU, to parsec, to kiloparsec, all the way to megaparsec--from the bottom-up of the long strip of map, to denote the distances when you look up the sky as you stand on the surface of the earth.

Logarithmic Maps of the Universe
Going Up? (Starts with a Bang)

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