Acknowledgements

We would like to acknowledge and thank the following sources for our pictures:

Figure 1.1 http://www.daviddarling.info/encyclopedia/S/Sun.html

Figure 1.2 http://yellowmagpie.com/mars-moon-phobos-deimos

Figure 1.3 http://www.freedigitalphotos.net/images/view_photog.php?photogid=2140

Figure 2.1 http://www.flickr.com/photos/9614328@N02/4749475972/

Figure 2.2 http://thegalaxyguide.com/galaxy/oortcloud/index.html

Figure 3.1  http://www.daviddarling.info/encyclopedia/S/Sun.html

Figure 4.1 http://apod.nasa.gov/apod/ap050104.html

Figure 4.2  http://www.theregister.co.uk/2007/09/10/pinwheel_edgy_stars/

Figure 5.1 http://www.daviddarling.info/encyclopedia/P/protostar.html

Figure 5.2 http://feed25.photobucket.com/albums/c69/nikemoto2511/web200812/feed.rss
Figure 6.1 http://www.123rf.com/clipart-vector/spacesuit.html