Astrology
what year was Uranus discovered
What is March 13, 1781
about how long ago was the big bang
What is about 13.8 billion years
When was the Earth made
what is 4.5 billion years
what is the biggest moon in the solar system
What is Ganymede
How fast is the Moon moving away from the Earth
What is about 3.8 Centimeters per year