What did kangaroos evolve from, and how did they get to Australia?

<h3>What did kangaroos evolve from, and how did they get to Australia?</h3>

How long has Australia been an island?
The last time I asked a question in the science section, I only got one answer, and it did not really answer the question.


<strong>Australia best answer:</strong>
<p><i>Answer by G Gibson</i><br/>They jumped~~~~~~~~~~.</p>
<p><strong>Southwestern Australia (NASA, International Space Station, 04/01/13)</strong>
<img alt="Australia" src="http://farm8.staticflickr.com/7299/8867539832_42d5d28583.jpg" width="400"/><br/>
<i>Image by <a href="http://www.flickr.com/photos/28634332@N05/8867539832">NASA's Marshall Space Flight Center</a></i>
The sun is about to set in this scene showing parts of southwestern Australia, which was photographed by one of the Expedition 35 crew members aboard the International Space Station on April 1, 2013. Several of the orbital outpost's solar array panels are seen in the foreground.

Image credit: NASA

Original image:
<a href="http://spaceflight.nasa.gov/gallery/images/station/crew-35/html/iss035e013379.html" rel="nofollow">spaceflight.nasa.gov/gallery/images/station/crew-35/html/...</a>

More about space station research:
<a href="http://www.nasa.gov/mission_pages/station/research/index.html" rel="nofollow">www.nasa.gov/mission_pages/station/research/index.html</a>

View more photos like this in the &quot;NASA Earth Images&quot; Flickr photoset:
<a href="http://www.flickr.com/photos/28634332@N05/">www.flickr.com/photos/28634332@N05/</a>

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