Sagittarius A-Star's latest activity

Her related paper is described in the Wikipedia article under "Ghost-free massive gravity"...

I don't know. However, here is a link to a related paper "Fitting rotation curves of galaxies by de Rham-Gabadadze-Tolley massive...

That is true, but I like that the geometric algebra shows that it all comes from one concept/methodology, based on very basic...

Here is a GA T-shirt with Maxwell's equation: https://bivector.net/merch.html#!/Maxwell-longsleeve/p/310027141

Here you can find good youtube videos with lectures of Professor Susskind: https://theoreticalminimum.com/courses For some of his...

Frame-dragging near the rotating Earth (about 30.7 milliarcseconds per year) was recently measure with a relative uncertainty of about...

Via the Lense–Thirring effect, gravity influences the orientation of free-falling gyroscopes in an Earth orbit relative to the stars...

NASA's Nancy Grace Roman Space Telescope Booster Landing

NASA Successfully launches Nancy Grace Roman telescope

Kinetic energy of a moving object is force integrated over distance. With proper acceleration ##\alpha=\gamma^3 \frac{dv}{dt}##...

I mean, you have relativistic effects even for small ##v/c##. But usually they are so small that they can be and are neglected by using...

100% of engineering & technology use Einsteinean physics, but in > 99% of the use cases Newtons laws of classical mechanics are accurate...

Are you sure the quoted text is from Einstein? In which paper did Einstein write this?

He (implicitly) assumed the invariant speed was infinite. Einstein realised it must be finite and equal to light speed. All the other...

All of them? Seriously? For starters there's the anomalous precession of Mercury (and the other planets). There's GPS time dilation...