Complex sentence: Gan De (c.400 BC-c.340 BC), also spelt Kan Te, was a Chinese astronomer reported to have seen one of the moons of Jupiter in about 362 BC. This was before Galileo's alleged discovery of the same in 1610.
Split into simpler sentences: Gan De (Chinese: 甘德, c.400 BC-c.340 BC), also spelt Kan Te, was a Chinese astronomer. He is reported to have seen one of the moons of Jupiter in about 362 BC. This was before Galileo's alleged discovery of the same in 1610.