Show:
Planets
The Sun
Man-made Objects
Natural Objects
Misc.
100

This planet is the "3rd rock from the sun." It has a large amount of water on its surface and is the only planet that currently has conditions which sustain life as we know it.

What is Earth?

100

This is the name for the dark areas on the sun, with temperatures much cooler than the rest of its surface.

What are sunspots?

100
These are human made objects which have been sent into orbit around Earth to relay communications, take pictures, and perform other tasks.
What are satellites?
100

These are large bodies that orbit the sun.

What are planets?

100
This is a non-contact force that acts on objects. If two objects are placed in space, they will be drawn towards each other by this force.
What is gravity?
200

Recently re-classified as a dwarf planet, this is the smallest planet found furthest out in our solar system.

What is Pluto?

200
The sun, and all bodies that orbit around it form this.
What is the solar system?
200

This fortress orbiting the earth is where many astronauts and researchers live. It was built by the efforts combined by many countries around the world and often has space shuttles dock with it to drop off supplies and exchange crew members.

What is the International Space Station?

200

This is a HUGE system of gas, dust, and stars. It houses our solar system, which is found at one of its far edges.

What is the Milky Way Galaxy?

200

This is a small, orbiting body made up of dust, ice, and frozen gases. The solid center of this is its nucleus, and like all objects in the solar system, it orbits the sun.

What is a comet?

300
This is the largest planet in the solar system.
What is Jupiter?
300

All objects in the solar system travel around the sun in this kind of orbit that is not circular, but more oval shaped.

What is an elliptical orbit?

300

This giant "space-based observatory" orbits the earth and records images and data to be sent back and analyzed. It observes the universe in multiple wavelengths of light, from ultraviolet to visible to near-infrared.

What is the Hubble Space Telescope?

300
This is a chunk of matter that enters our atmosphere and is heated by friction with the air to the point of burning up as it falls towards the Earth.
What is a meteor?
300
In this process, the nuclei of atoms fuse together to form a larger nucleus.
What is nuclear fusion?
400

Known as the red planet, this planet has shown evidence that it may have had microscopic life on it long ago.

What is Mars?

400
This is the innermost part of the sun where it's energy is generated.
What is the core?
400
These are the two rovers that are currently exploring and observing the surface of Mars.
What is Spirit and Opportunity?
400

In these large, rotating clouds of gas and dust, materials clump together to form dense regions and, once dense enough, form stars.

What are nebulae?

400
This is the name of the region located beyond Neptune which contains many icy bodies and comets.

What is the Kuiper Belt?

500

This planet, the 8th from the Sun, is made of mostly hydrogen, helium, and methane gas.

What is Neptune?

500
The sun's rays strike Earth most directly along here.
What is the equator?
500

This is the lander craft that, within the last decade, brought two rovers to Mars to investigate.

What is The Phoenix?

500

This is the term used to describe a star that has stabilized, consistently fusing hydrogen into helium in its core.

What is a main-sequence star?

500

This planet takes 163 Earth years to orbit around the sun once.

A. Neptune

B. Jupiter

C. Venus

What is Neptune?