Evolution of dark matter and the rotation of the Universe
The standard model of cosmology – our leading theory of cosmic evolution – suggests that dark energy is constant throughout the universe and over time, making it a fundamental property of space. If it were constant, the mysterious dark energy, which makes up as much as 70 percent of the universe, would push away all stars and galaxies. However, the most comprehensive survey of the universe’s cosmic history suggests that dark energy, also known as the hypothetical “antigravity” force, may evolve over time rather than remain constant, pointing to a less lonely future for the universe’s inhabitants.
Anomalous ‘light’ black holes are primordial in the Universe
Black holes are formed either by the collapse of a massive star or by the merger of heavy objects. However, scientists suspect that smaller “primordial” black holes, including some with masses similar to the Earth, may have formed in the chaotic early moments of the universe. When we think of black holes, we tend to picture enormous cosmic monsters, such as stellar-mass black holes with masses tens or hundreds of times that of the Sun. We can even imagine supermassive black holes, with masses millions (or even billions) of times that of the Sun, sitting at the hearts of galaxies and dominating their surroundings. A team of scientists has predicted that NASA’s Nancy Grace Roman Space Telescope could detect a class of “light” black holes that have eluded detection until now.