Starlight do bend
Place a ball on a sheet of rubber, and the ball’s weight misshapes the sheet. Einstein understood that something comparative occurs in space: Gravity from stars and other massive items bends the paths of a close-by light ray. On the off chance that a ray of light from a far-off star passes the sun on its approach to Earth, for instance, it should bend enough to cause a small move in the observed position of the star.
Einstein played out some calculations to decide the size of the anticipated shift, yet at first, it blundered the effort, landing at a number that was half the right value.
The astronomers figured out how to test this number in their studies and their perceptions didn’t coordinate his prediction.
Gravitational waves do not exist
The discovery of gravitational waves from 2016 was hailed as a triumph of Einstein’s hypothesis, the affirmation of a prediction made in 1916.
Not long after developing general relativity, Einstein started to think about whether there may be a wave related to gravity as there is with electromagnetism or not.
He came to the conclusion that gravitational waves couldn’t exist since they’d make “singularities”, meaning regions in which space and time are extended to infinity.
In any case, Einstein had it wrong, due to a mathematical coordinate system he used to handle the issue. It’s somewhat similar to what occurs with the latitude and longitude used to track positions on Earth, It works just fine for many places on Earth. Yet, as one gets near to the poles, lines of longitude merge and the system separates.
Einstein did not demonstrate that gravitational waves cannot exist, but just that they cannot exist in the mathematical system that he’d utilized.