The largest known star Canis Majoris is so big that if our Sun were a ball 117cm (46in) wide, Canis Majoris would be 2.25 kilometers (1.3 miles) wide.About 3,000 stars are visible to the unaided eye on a clear moonless night. About 100,000 stars can be seen using a small telescope. There are an estimated one hundred billion (100,000,000,000) stars in our own Milky Way galaxy, although some estimates range up to four times that many, much depending on the number of brown dwarfs and other very dim stars.
Amazing fact: Pluto moon
Due to its size, Pluto's moon Charon is also considered to be a double dwarf planet (two planets orbiting each other), rather than a moon orbiting its planet.
Amazing fact: moon
The moon smells like burnt gunpowder. No one is quite sure why.The moon is 27% the size of the Earth.
Amazing fact: lunar module
The Lunar Module from the Apollo missions required less computer power to land on the moon than today's average cellphone!
Amazing fact: Sun
The Sun provides our planet with 126,000,000,000,000 horsepower of energy every day.
