Brand M

for all things social and astronomical.

[Brand M @_NBetweenSeas]

Yup it’s happening

[Tom Williams @tw__astro]

Saturn through the eyepiece just now - wait until the zoom-in.
Great conditions from southern UK (although feeling very muggy!)

[Mathelirium @mathelirium]

The Non-Traversable Bridge Einstein Found Inside Gravity

Einstein’s equations not only describe gravity as a force but as the shape of Spacetime as well.

In 1935, Einstein and Rosen found that the Schwarzschild solution could be written in a way that reveals something astonishing:

Two separate exterior regions of Spacetime joined by a bridge-like throat

Rᵤᵥ = 0

This became known as the Einstein-Rosen Bridge.

It is often called a Wormhole, but the classical Einstein-Rosen bridge is not a science-fiction tunnel. In the standard Schwarzschild geometry, it is non-traversable. The throat does not remain open long enough for ordinary travel from one region to the other.

Its real power is mathematical.

It shows that General Relativity is not merely about objects moving through space. The theory allows Spacetime to have global structure such as different regions, horizons, extensions, and hidden connections that are not visible from one local patch alone.

The Einstein-Rosen bridge is one of the earliest glimpses of that deeper idea.

Gravity is geometry.

And sometimes, geometry has two worlds joined by a throat.

#Astrophysics #GeneralRelativity #Einstein #BlackHole #Spacetime #Cosmology #Gravity #Wormhole #Mathematics #Physics

[Mathelirium @mathelirium]

A Black Hole Can Be Dragged Through Spacetime

A Black Hole does not have to sit still.

Einstein’s equations allow a stranger possibility... a Black Hole that accelerates.

This is the C-metric, an exact solution of General Relativity describing an accelerating Black Hole.

The Black Hole accelerates because the geometry of Spacetime says it must.

The C-metric is one of those exact solutions that reminds us how wild General Relativity really is. Gravity is not just attraction, and Spacetime is not just a stage.

Sometimes the stage itself contains the force.

#Astrophysics #GeneralRelativity #Einstein #CMetric #BlackHole #CosmicStrings #Spacetime #Cosmology #Mathematics #Physics

[Brand M @_NBetweenSeas]

To me this is the only way it can be done!

[Piotr Binkowski @piotrbinkowski]

The stars offered perspective, not comfort.

[Ai女子ガールズ @aiphotoaixtc]

お笑い研究部の女子
高等部三年
#AI学園
（これはAI生成画像です）

[clove @jclove_r]

The glow, the texture, the mix… satisfying in every frame ✨