Earth Quote by Isaac Newton

The moon is not kept in her orbit round the earth, nor the earth in her orbit round the sun, by a force that…

— Thomas Malthus

There is still some gravity where we are and even as far out as our moon. That is why our moon stays in orbit…

— Sunita Williams

The Moon has given us months, tides and a destination that ever-beckons. It's time we build a rocket and go to stay.

— Chris Hadfield

The time the moon is going back, the blood that is in a person does be weakening, but when the moon is strong, the…

— Lady Gregory

If the moon and earth were not retained in their orbits by their animal force or some other equivalent, the earth would mount to…

— Johannes Kepler

The waters are in motion, but the moon retains its serenity.

— D.T. Suzuki

It's the moon that makes it so still, weaving some mystery.

— Fyodor Dostoevsky

Hence I feel no shame in asserting that this whole region engirdled by the moon, and the center of the earth, traverse this grand…

— Nicolaus Copernicus

What's the orbital velocity of the moon?

— Terry Pratchett

The moon may change so soon but nothing keeps it from coming back the next afternoon

— Liv Hope

“The moon is a loyal companion. It never leaves. It’s always there, watching, steadfast, knowing us in our light and dark moments, changing forever…

— Tahereh Mafi

Of habit, the power that keeps the earth from flying to pieces; though there is some silly theory of gravitation.

— O. Henry