Cartoonish planets,

Alien spaceships,

Low resolution,

Low quality,

Pixelated image,

Blurry,

Unrealistic proportions,

Fictional planets,

Extra planets,

Human characters,

Animals,

Text,

Logo,

Watermark,

Grainy,

Fake stars,

Poorly drawn stars,

Oversaturation,

Incorrect scientific facts,

Distorted images,

Unprofessional,

Extra sun,

Extra moons,

Plastic look,

Glowing earth,

Fantasy elements,

Non-space related objects,

Imaginary celestial bodies,

Poorly drawn asteroids,

Unnatural colors