According to the theory of relativity, as formulated by Albert Einstein, time dilation occurs at high speeds. If you were to travel through space at a speed approaching the speed of light and return to Earth after 10 years of your subjective experience, you would find that Earth has aged more than 10 years.
From the perspective of an observer on Earth, time would appear to pass normally, so the Earth would have aged by 10 years. However, due to time dilation effects, your own experience of time would be different. As you approach the speed of light, time would appear to pass slower for you relative to the observer on Earth. This phenomenon is known as time dilation.
The specific amount of time dilation depends on the velocity you achieve and the duration of your journey. As you approach the speed of light, time dilation becomes more significant. For example, if you were to travel at 99% of the speed of light, the time dilation factor would be approximately 7, meaning that for every year of your subjective experience, roughly seven years would have passed on Earth.
Therefore, if you were to travel at extremely high speeds and return to Earth after 10 years, you would find that Earth has aged significantly more than just 10 years. This effect is one of the fascinating implications of the theory of relativity.