A Star is Born | How the Universe Works. (n.d.). Retrieved November 19, 2015, from https://www.youtube.com/watch?v=mkktE_fs4NA
Australia Telescope National Facility. (n.d.). Retrieved November 2, 2015, from http://www.atnf.csiro.au/outreach/education/senior/cosmicengine/galaxy_formation.html
Galaxy Formation. (n.d.). Retrieved November 2, 2015, from https://stardate.org/astro-guide/btss/galaxies/galaxy_formation
HubbleSite - Discovering Planets Beyond - How Do Planets Form? (n.d.). Retrieved November 19, 2015, from http://hubblesite.org/hubble_discoveries/discovering_planets_beyond/how-do-planets-form
Milky Way Galaxy Formation - 2011 Simulation. (n.d.). Retrieved November 19, 2015, from https://www.youtube.com/watch?v=MncUDWhPB_E
Star Formation. (n.d.). Retrieved November 19, 2015, from http://abyss.uoregon.edu/~js/ast122/lectures/lec13.html
Stars - NASA Science. (n.d.). Retrieved November 19, 2015, from http://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve/
Stephen Hawking - Formation of the Solar System. (n.d.). Retrieved November 19, 2015, from https://www.youtube.com/watch?v=Uhy1fucSRQI