This article used Google Translate under the characters section (Baby Sun). It said:
"in the sun in the sky with a baby face. Laughing when the Teletubbies do something like dancing or falling over."
The English article instead said:
"appears at the beginning and end of each episode. She acts as a wake-up call for the Teletubbies."
Although it's true the Sun Baby giggles when the Teletubbies dance or fall over, but the translation needs improvement. The English article has more info on the show and its characters. 2602:306:83A9:3D00:F1:33F5:2B26:175F 10:29, 20 Tachwedd 2016 (UTC)