Tag Archives: cosmology

Pale Red Dot

Posted on April 7, 2011 by

Have a look at the very centre of this image, and tell me what you see. A small red dot, perhaps. Nothing wildly exciting. But that would be a horrible underestimation of this particular red dot. You see, this red … Continue reading →

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Travelling Without Moving

Posted on October 18, 2009 by

IBEX’s image yesterday reminded me a bit of the now famous WMAP image of the cosmic microwave background, which in turn reminded me of a conversation I was having the other day. That conversation may or may not have been … Continue reading →

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The Sunyaev-Zel’dovitch Effect

Posted on September 23, 2008 by
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The Dark Universe

Posted on April 11, 2008 by

So apparently, everything we can see in the whole universe is just the tip of the proverbial iceberg. Like the back jelly beans in this picture (which I’ve stolen from the Chandra Blog), most of the universe is completely invisible … Continue reading →

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