Celestial Bods
The movement of celestial bodies that is responsible for day/night cycles.
What is rotation.
These planets are also known as the "Gas Giants"
Planetary moons naturally orbit a planet, or in other words, they perform this action around it.
What is a revolve
This state of matter makes up a star
What is a gas
Weightlessness occurs when astronauts are subject to this force, intially discovered by Isaac Newton.
What is gravity
This branch of science that studies outer space and the objects in it.
What is astronomy
This neumonic device is a trick for remembering the order of the planets from closest to furtherst from the Sun.
What is (any correct neumonic device).
This planet has the most moons in our solar system.
What is Saturn
Our sun is made up primarily of these two elements.
A GPS is an example of this type of celestial object (must be specific)
What is an artificial satellite.
This many light-years is equivalent to how far Pluto is from Earth. (Pluto is 5,210,000,000 km from Earth and 1 light-year is 9,460,000,000,000 km)
What is 0.0006 light years
Due to a lack of atmosphere to trap heat, this closest planet to the Sun experiences extreme temperature swings ranging from 430°C during the day to -180°C at night.
What is Mercury
This fraction of the moon is always facing Earth
What is one half (1/2)
At the centre of a star, hydrogen atoms combine under high temperature and pressure due to this process.
What is nuclear fusion
This phenomenon provides evidence that our universe is expanding.
What is Red Shift (Cosmic Microwave Background also accepted)
This term is the name of an area containing a lot of comets
What are Oorts
Unique among its neighbors, this planet rotates completely on its side, meaning its axis of rotation lies on the same plane as its orbit.
What is Uranus
What is rotate
A small star sheds it outer layers of gas to first form this celestial object.
What is a white dwarf
The global space surveillance network (SSN) tracks the locations of this interstellar hazard.
What is space junk
Dust, gas, and this substance (also found on Earth) make up the composition of a comet
What is ice
Along with Uranus, this planet exhibits a backward, or retrograde rotation.
What is Venus
What is ... new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent.
A red giant forms due to this reason.
Beyond recycling waste, the ISS generates drinkable water by capturing it from the air, which is fueled by what?
What is the astronauts' breath and sweat