.................... Was a cold cloudy mass of cosmic dust and gases which gave rise to our system.

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Cosmic Structure**: The question asks for the name of the cold, cloudy mass of cosmic dust and gases that gave rise to our solar system. This structure is known as a "nebula."

2. **Understanding the Formation Process**: The nebula is believed to have undergone a process where it collapsed under its own gravity. This led to the formation of a spinning disk of material.

3. **Theoretical Background**: The concept of the nebula forming the solar system was proposed in 1734. Scientists suggested that this spinning cloud of gas and dust was the precursor to our solar system.

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