Apsis of spacetime: the Slowness of the Aphelion

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Today is the day of the year – the spacetime point of Earth’s orbit – where we are furthest from the star whose gravity shapes our orbit: today we are at aphelion, the day when planet Earth is at the maximum distance from the Sun.

And since an orbiting body moves at maximum speed at the closest point, and at minimum speed at the furthest point from the system’s center of gravity, today we can enjoy an orbital speed of about 500 meters per second slower than the average.

Today we are traveling in interplanetary space at only 29.3 km/s, against the 30.3 km/s of perihelion (which occurs in early January).

The cosmic advice of the day is: take everything slowly,
enjoy these 500 m/s of cosmic slowness compared to the average.


Published by marghezz

Astronomer, human of planet Earth investigating supermassive black holes.

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