Name The Year: Sir William Herschel discovers Saturn's moon Enceladus.?

Questions

What name is given to the belt of low air pressure that is located at the equator?

What type of clouds are also known as thunderheads?

The depiction of the Mad Hatter in "Alice in Wonderland" reflected a poisoning of 19th century hatmakers from what?

Whose laws first described the motion of the planets round the sun?

What does the red spot on the Japanese flag represent?