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The largest known asteroid is 965 km (600 mi) wide. Discovered by Italian astronomer Giuseppe Piazzi in 1801, the dwarf planet Ceres was the first, and largest, object to be considered an asteroid. It is located in the Asteroid Belt between the orbits of Mars and Jupiter and accounts for 33% of the entire belt’s mass.

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If two pieces of the same type of metal touch in space they will permanently bond. This incredible fact is also known as “cold welding” and it happens because the atoms of two pieces of metal have no way of knowing they are separate. This doesn’t happen on Earth because of the air and water found between the pieces.

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Beautiful picture of London City center in 1985.

In 3.75 billion years, the Milky Way and Andromeda galaxies will collide. Andromeda approaches the Milky Way, home to our solar system, at about 110 kilometers per second (68 mi/s), eventually forming a giant elliptical galaxy. Milky Way and Andromeda galaxies

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