In 1986, a brittle O-ring seal was determined to be the cause of what?

More Questions:

How many players are there in a standard team handball team?

The word gherkin, a small pickle, is based on the Dutch word "gurken" meaning what?

Which flower is also known as the "Lent Lily"?

What does the "touch of Midas" turn everything into?

Which videgame franchise had frequent segments on The Super Mario Bros. Super Show?

What category of writing are the Hugo and Nebula awards given for?

What layer of the atmosphere is closest to the earth?

What year did Edward Jenner introduce the world's first successful vaccine?

What 1960's television series was set at the fictitious Coral Key Park & Marine Preserve?

What island was the scene of a nuclear accident in 1979?

The 1976 Summer Olympics were held in which city?

In mathematics which prefix refers to 10 to the power of minus 18?

Which book did James Fenimore Cooper publish in 1826?

Whose debut solo album was titled "I Got Dem Ol' Kozmic Blues Again Mama!"?

What year did the TV special "A Charlie Brown Christmas" made its debut on CBS?