Are You In Our World?

15 Points Per Correct Answer - No time limit  

1. Which planet's diameter is 40% of Earth's diameter and 40% larger than Earth's moon? Mercury Pluto Venus Mars

2. How far from our galaxy is our sister-world, Andromeda? 1.5 billion light-years 1.5 light-years 2.5 million light-years 5 billion light-years

3. Which of the following bodies has a surface that is 98% nitrogen? Mercury Venus Pluto Io

4. According to scientists at NASA, how far from Earth is the edge of the observable universe? 4 trillion light-years 15 billion light-years 9 million light-years 197 billion light-years

5. The largest "impact event" of the 20th century took place in the air above which continent? Africa Australia Asia North America

6. Light cannot escape from a black hole once it crosses which of the following? the Schwarzschild radius the perpendicular angle of a black hole the Hallenburg point the Flutzenhouser diameter

7. Which of Mars' moons orbits the red planet three times in a single day (or once every seven hours)? Answer: (One Word (spelling counts))

8. Polaris (the North Star) is the Latin abbreviation for what? Ursa Polaris Polaris Navigus Stella Nortis Stella Polaris

9. Which planet has winds that reach speeds of 1,100 miles per hour at its equator? Uranus Jupiter Saturn Mercury

10. The atmospheric composition of Neptune is 85% helium. True False