This map shows the Dark Matter distribution in the COSMOS field observed by the Hubble Space Telescope (left) and by the James Webb Space Telescope (right). Dark Matter distribution in the COSMOS field. The overlaid contours mark regions of equal dark-matter density, highlighting where this invisible matter – shown here in a blue color – is most strongly concentrated. Credit: Dr. Gavin Leroy/Professor Richard Massey/COSMOS-Webb collaboration Scientists have produced the most detailed map ever