It's important to clarify that Earth is not moving away from the Sun at speeds approaching or exceeding the speed of light. The motion of Earth in its orbit around the Sun is relatively small compared to the speed of light.
The speed at which Earth orbits the Sun is approximately 30 kilometers per second (67,000 miles per hour). This speed is significantly slower than the speed of light, which is about 299,792 kilometers per second (186,282 miles per second). In fact, the speed of light is about 10,000 times faster than the orbital speed of Earth.
The idea that nothing can move faster than the speed of light is a fundamental concept in special relativity, which applies to objects with mass. It states that no object with mass can reach or exceed the speed of light in a vacuum. However, special relativity does not impose any limitations on the relative motion of objects that are not traveling near the speed of light.
Therefore, Earth's orbital speed around the Sun does not violate the principles of special relativity. The motion of Earth is governed by the gravitational forces between the Sun and Earth, which result in a stable orbit. While Earth is in motion, its velocity is far below the speed of light, and thus, there is no conflict with the limitations imposed by special relativity.