Stunned longtime aides to former President Joe Biden told The Post Monday that his stage 4 prostate cancer should have been caught long before it spread to his bones — and that they fear concern about public reaction delayed a possible diagnosis.

Dr. Ezekiel Emanuel, who served on the former president's COVID-19 advisory board, said Joe Biden has likely had cancer years before announcing his diagnosis.

Biden’s Cancer Revelation Sparks Unexpected Royal Reaction: King Charles’ Secret Message Uncovered Euclid is a six-year mission by the European Space Agency (ESA) aimed at mapping the dark universe by analyzing the positions of galaxies and capturing images of dark matter through gravitational lensing distortions of distant galaxies.