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? Venus Mars Pluto Mercury

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

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

4. According to scientists at NASA, how far from Earth is the edge of the observable universe? 15 billion light-years 9 million light-years 4 trillion 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 Hallenburg point the Flutzenhouser diameter the perpendicular angle of a black hole the Schwarzschild radius

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 Stella Polaris Stella Nortis Polaris Navigus

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

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