Complete the wordcloud with appropriate words given a topic.
Topic: Space Exploration
- NASA
- Mars
- Satellite
- Rocket
- Mission
- Astronaut
- Cosmos
- Universe
- Probe
- Lunar
- Orbit
- Telescope
- Discovery
- Spacecraft
- Galaxy
- Star
- Astronomy
- Extravehicular activity
- Gravity
- Planet
Complete the following task based on the instruction and optional input provided.### Instruction:
Complete the wordcloud with appropriate words given a topic.

### Input:
Topic: Space Exploration

### Output:
- NASA
- Mars
- Satellite
- Rocket
- Mission
- Astronaut
- Cosmos
- Universe
- Probe
- Lunar
- Orbit
- Telescope
- Discovery
- Spacecraft
- Galaxy
- Star
- Astronomy
- Extravehicular activity
- Gravity
- Planet