* Our Solar System's Scale: Our solar system is vast. The distance between the Sun and Earth is approximately 150 million kilometers (93 million miles). This distance is called an Astronomical Unit (AU).
* Orbital Stability: Objects orbiting close to the Sun would need incredible speed to avoid being pulled in by the Sun's gravity. A planet at only 150 km would likely be a rapidly decaying object, spiraling into the Sun.
* The Inner Solar System: The inner solar system is occupied by rocky planets like Mercury, Venus, Earth, and Mars. They are all far beyond 150 km from the Sun.
* Asteroids: There are many asteroids in the asteroid belt between Mars and Jupiter. While some asteroids might come close to the Sun, they are still far beyond 150 km.
To put things in perspective:
* The International Space Station orbits Earth at an altitude of about 400 kilometers.
* Even the closest planet to the Sun, Mercury, is about 46 million kilometers away.
It's likely that anything that close to the Sun would be vaporized or quickly pulled in by the star's gravity.
