Heidi+and+Sofie

Space and Science.

How many galaxies are there? Did you know that there are over 500 BILLION galaxies? Well their are. Scientist belive that there are 500 billion or more galaxies. Scientist have seen 3,000 visible galaxies though.http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/021127a.html

Will the sun ever stop shining? Yes.. Eventually the sun will stop shinning. Thats what scientist beleive. Scientist beleive that the sun will stop shinning in 7 billion years.http://www.universetoday.com/guide-to-space/the-sun/how-long-will-the-sun-shine/ The reason why they think that is because the sun uses HYDROGEN. Hydrogen is the most abundant chemical element constituting over 75% of the universes elemental gas. http://en.wikipedia.org/wiki/Hydrogen.

Will the sun ever explode? The sun is a star and as a stars life expands the star explodes... but the sun will not explode. The sun is way to small to create a supernova. As the sun dies it will expand and become a big ball of fire [bigger than it is now]. Which will eventually eat up the earth. There will not be an explosion though.http://answers.yahoo.com/question/index?qid=20080129174949AAJEYmH