Gravity plays a crucial role in the formation and stability of our solar system. It assisted in forming the universe, keeps the moon in orbit around the Earth, and prevents Earth from hurtling into the sun. The
In 1915, Albert Einstein figured out the answer when he published his theory of general relativity. The reason gravity pulls you toward the ground is that all objects with mass, like our Earth, actually bend and curve the fabric of the universe, called spacetime. That curvature is what you ...
silly, and pretty silly orbits. Thought I’d share some of the latest. Most were created thanks to the new auto-fire feature, that let me draw *a lot* of stuff really quick. Because more is better.
I came up with the idea for this while working on a project that is close to my heart, namelyHarmony of the Spheres. Harmony of the Spheres is open source and very much a work in progress, so if you enjoy this tutorial and got your appetite for all things space and physics related g...
We present some of the key developments in CST in Sects.4,5and6. We begin with the kinematical structure of theory and the program of “geometric reconstruction” in Sect.4. Here, the aim is to reconstruct manifold invariants fromorder invariantsin a manifold-like causal set. These are func...
They tracked you on the ‘scope, matched orbits with you, and picked you up. First time in history, I guess. Now keep quiet. You’re a sick man — you hung there more than two hours, Bill.’ (ed note: unfortunately Bill has to resign, since he has contracted a bad case of ...
While being as old as general relativity itself, the gravitational two-body problem has never been under so intense investigation as it is today, spurred by both phenomenological and theoretical motivations. The observations of gravitational waves emitte
as astronomers we were taught to calculate orbits using instantaneous forces; then extract the position of some body along its orbit at a time of interest, and calculate where that position would appear as seen from Earth by allowing for the finite propagation speed of light from there to here...
we know that the earth orbits the sun because of the gravitational pull of the sun, the moon is held in its orbit around the earth, because of the earth’s gravity. and yet when astronauts are in space, they have experienced weightlessness and go on spacewalks and such. nasa refers to...