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The Star of Bethlehem

Ever since Jesus was born, people have been pondering on...

Our Galaxy – one of billions in the Universe –...

A lecture on the Solar System’s most important inhabitant: our...

In 1781, William Herschel became the first man in history...

Jupiter's Great Red Spot was first discovered in 1664 by...

Millions of dirty icebergs orbit around the Sun in a...

Quasars are among the most dramatic objects anywhere in the...

Many robotic spacecraft have been sent to explore the cold...

There is a whole Universe of different shapes, sizes and...

Our spaceship Earth is in constant motion – rotating and...