Blue 1
What percentage of the surface of the Earth is covered in water?
70%
How many days does it take the Earth to travel around the Sun?
365.25
Many probes have succesfully traversed the Asteroid belt without any collisions. Due to the low density of objects in the belt what are the odds of a probe running into an asteroid?
Less than 1 in 1 billion!
Neptune is primarily composed of Helium and what?
Hydrogen!
Besides the Sun, what is the brightest celestial object that you can see from Earth?
The Moon!
What is the generally accepted hypothesis on how the Moon was formed?
A Mars sized planet, called Theia, collided with the Earth and the resulting debris formed the Moon!
While previously called a "gas giant" Neptune has been recently renamed as what?
an "ice giant"
Neptune has 14 known moons! The largest is named what?
Triton!
Which country was the first to send a probe to the Moon?
The Soviet Union in 1959
What is larger? Mars or the Earth?
The Earth!
Mars is approximately half the diameter of Earth and only has 11% of the Earth's mass.
Most of the objects in the Kuiper belt are composed of what?
Ice!
Kuiper belt objects or KBOS are sometimes also called "Kuiperoids'" and TNOs. What does TNO stand for?
Trans-Neptunian Object
Olympus Mons
True of False - There is liquid water on the surface of Mars.
False! There is ice at the poles though!
Pluto!
Compared to the Kuiper belt, which is approximately 50au from the sun, how far does the Oort cloud extend from the sun?
200,000au or 4,000 times farther away!
99.8%
About half of the mass of the Asteroid belt is contained within it's 4 largest asteroids. They are Vesta, Pallas, Hygiea and what?
Ceres!
Unlike the disc shaped Asteroid belt and Kuiper belt, the Oort cloud is shaped like what?
a sphere!
If Voyager 1 enters the Oort cloud in 300 years, when will it exit the Oort cloud?
30,000 years later!