invisible substance called dark matter (25 percent) and a force that repels gravity known as dark energy (70 percent). Scientists have not yet observed dark matter directly. It doesn't interact ...

Dark energy plays an opposite role ... matter should clump in halos surrounding galaxies. By plotting its chart of dark matter against what those models predict, Rubin might exclude some theories ...

Another possible theory is known as ‘evolving dark energy’ or ‘quintessence,’ in which there is another, previously unknown field that has the opposite effect of matter and normal energy. It could ...

The Large Magellanic Cloud, a dwarf satellite galaxy orbiting the Milky Way, causing the larger galaxy to “wobble,” imparting ...

impressive figures. By modern estimates, the universe is only about 5% regular matter and energy, and about 27% dark matter, ...