Diameter
Hazy
To advance
To equip
Habitable
Seasonal
Astronomer
Geyser
Requirement
The distance across a celestial body, such as a planet, moon, or asteroid, at its widest point.
To provide with the necessary tools, instruments, or equipment for space exploration or research.
A necessary condition or need for successful space exploration or a specific space mission.
A vent or opening in the surface of a planet or moon that erupts hot water, steam, or gas into the air.
Occurring or varying according to the seasons, such as seasonal changes in weather or climate on different planets.
Obscured or partially hidden by dust, clouds, or other particles, making it difficult to see clearly.
A scientist who studies the universe, including its stars, planets, galaxies, and other phenomena.
To make progress or move forward in the understanding or exploration of space.
Capable of supporting life or having the potential to sustain life.