Earth And All Other Planets Are Drifting Away From The Sun
Recently, Earth reached the point in its orbit where it was at its closest position from the Sun, known as perihelion. Each object revolving a single mass, just like the Sun forms an ellipse, comprising a point of neighboring line that’s exceptional to that specific orbit, recognized as periapsis. For the last 4.5 billion years, Earth has revolved the Sun in an ellipse, like all other planets revolving their stars in the other established solar systems throughout Universe and the galaxy.
But there is something unexpected which people may not appreciate. The orbital path of Earth does not remain the same, but helixes outward. In 2019, Earth’s perihelion was 1.5 centimeters beyond than it was last year, which was further distant than the year before. Reportedly, it is not just Earth, but every other planet is drifting away from its parent star. The force which is mainly responsible for the orbits of each planet around every solar system is the same in the Universe, which is the universal law of gravitation. This is the science behind that. Whether we look at it in terms of Einstein, where the mass and energy bend the fabric of space-time through which the masses are travelled, the orbit is dominated by the largest mass of everything it influences, or in according to Newton, where each mass attracts every other mass in the Universe.
The gravitational force would have remained constant over time, if the central mass of every orbit was fixed. Then every orbit would have continued in a closed ellipse, perfect manner and would have never changed. But of course, that is not what always happens. There are many additional masses present in each solar system such as, moons, planets, asteroids, Kuiper belt objects, centaurs, satellites and more. These masses help to disturb the orbits, instigating them to precess. This means that, periapsis, the point of closest approach or perihelion for an orbit with admiration to Sun alternates over time.