Long-period comets are believed to come from where?

More Questions:

In photography, what kind of "number" is used to measure lens speed?

'St. Vitus's Dance" is what?

What dog is the hero of Jack London's "The Call of the Wild"?

'Girls with a Pearl Earring" is one of only thirty-five extant works of what Dutch painter?

What is the capital of Indiana?

Sofia is the capital of which nation?

The brown recluse spider is identifiable by a silhouette of what shape on its body?

The angel shark is commonly referred to by what other name?

What is the name of Simba's uncle in the movie "The Lion King"?

Who played the title role in the 1990’s sitcom "Caroline in the City"?

The Hobbit Samwise Gamgee was played by whom in Lord of the Rings?

What actress shaved her head for her role in the movie "The Passion of Joan of Arc"?

How old was Lady Diana when she married Prince Charles?

Which constitutional amendment gives US citizens the right to bear arms?

What replaced English as the official language of Kenya in 1974?