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Stars like the sun, aren’t the only source of light in our galaxy. As we move further away from Earth, our sun becomes just a small point of light. But what could possibly be bigger and hotter than the sun? Best of Earth Science: http://bit.ly/EarthLabOriginals Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos Wonders of the Universe (2011) The universe is almost impossible to comprehend - 13.7 billion years old, 93 billion light years across and filled with over 100 billion galaxies, each containing hundreds of billions of stars. This series explains the vast phenomena of deep space by re-examining the familiar on Earth. This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx