No, the Earth is slightly farther from the Sun than it was 100 years ago.
While Earth's orbit isn't perfectly circular, it's also not steadily shrinking or expanding. Instead, Earth's orbit experiences subtle changes over very long periods due to gravitational interactions with other planets in our solar system. These changes are incredibly slow, with Earth drifting slightly farther away from the Sun over millions of years.
In summary:
- Earth's orbit is not perfectly circular, but it's not shrinking.
- Earth is slightly farther from the Sun now than it was 100 years ago.
- The change in distance is due to long-term gravitational influences.
