Question

Which is common characteristic of all planets
1. Repel nearby objects
2. Have a maximum mass
3. Have a moon
4. Orbit a star

Answer 1

The common characteristic of all planets is **4. Orbit a star**. All planets in our solar system and beyond revolve around a star (such as the Sun). The other options are not universally applicable to all planets. For example, not all planets have moons, and they do not have a maximum mass due to gravitational constraints. Planets do not necessarily repel nearby objects; gravitational interactions can lead to attraction instead.