1 - What are the 4 Galilean Satellites?
2 - Brass is an alloy of which two metals?
3 - Who allegedly invented a mechanism where a pipe fitted in spiral inside a tube will raise water or grain when turned?
4 - Who first observed the moons of Jupiter?
5 - Which of these was NOT the name of a US Spacecraft?
6 - How many more times heavier is the Sun than the Earth?
7 - What element has "H" for symbol?
8 - To which country does the .ie domain suffix belong?
9 - In the English system of measurement, what was the original value of a yard? (it is now 36 inches)
10 - Euclid's 'The Elements' is a book about what?
11 - For what accomplishment did Einstein receive a Physic Nobel Prize?
12 - What is a micro-kernel?
13 - Who discovered Charon, the satellite of Pluto?
14 - Which of these is a star?
15 - Richard Feynman is a famous:
16 - Which of these is a self propagating, self replicating computer program?
17 - Roughtly how long ago did the Sun form?
18 - What is a prion?
19 - How was the length of a meter originally defined?
20 - What are currently the two ways to achieve temperature and pressure required to initiate nuclear fusion?