CURRENT AFFAIRS

Detailed explanation-1: -The term dark matter was coined in 1933 by Fritz Zwicky of the California Institute of Technology to describe the unseen matter that must dominate one feature of the universe-the Coma Galaxy Cluster.

Detailed explanation-2: -But over the past half-decade or so, some researchers have become more open to an older idea: Dark matter consists of primordial black holes (PBHs) that emerged from the Big Bang.

Detailed explanation-3: -Scientists have discovered dark matter around galaxies that existed about 12 billion years ago, the earliest detection yet of this mysterious substance that dominates the universe.

Detailed explanation-4: -If most of the primordial black holes were “born” at a size roughly 1.4 times the mass of Earth’s sun, they could potentially account for all dark matter, said Yale professor of astronomy and physics Priyamvada Natarajan, the paper’s theorist.