The first outside orbit of the Earth planet is Mars.

Explanation:

The Earth is the third planet from the Sun in our solar system. It is located between Venus (the second planet) and Mars (the fourth planet). The Earth orbits the Sun in its own path called an orbit.

What is an orbit?
An orbit is the path followed by an object in space as it moves around another object due to the force of gravity. In the case of planets, their orbits are elliptical, meaning they are elongated circles.

Order of planets from the Sun:
The planets in our solar system, in order from the Sun outward, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has its own orbit around the Sun.

The first outside orbit:
The question asks for the first planet outside the Earth's orbit. Since Mars is the fourth planet from the Sun, it is the first planet outside the Earth's orbit.

Characteristics of Mars:
Mars is often called the "Red Planet" because of its reddish appearance. It is smaller and colder than Earth but has some similarities, such as a day-night cycle and seasons.

Exploration of Mars:
Mars has been a subject of fascination for scientists and space agencies. Several missions have been sent to Mars to study its surface, atmosphere, and the possibility of past or present life. These missions include both orbiters and landers, such as the Mars rovers.

Conclusion:
In conclusion, the correct answer to the question is option 'B' Mars. It is the first planet outside the Earth's orbit.

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