> What's wrong with accelerating toward the planet It rotates the orbit, which is not the most efficient way to de-orbit. Instead, to de-orbit with minimal del

> What's wrong with accelerating toward the planet It rotates the orbit, which is not the most efficient way to de-orbit. Instead, to de-orbit with minimal delta-v expended, you burn retrograde at the highest point of the orbit. This will lower the lowest point of the orbit into the atmosphere.