A new method could enable physicists to spot signs of dark matter in gravitational waves that are detected on Earth. This could occur if two colliding black holes spiral through a dense region of dark matter and merge, leaving an imprint in gravitational waves that are rippling across space and time.

For decades, the search for life beyond Earth has revolved around a key question: What molecules should scientists be looking for on other planets or moons? A new study suggests the more revealing clue may not be the molecules themselves, but the hidden order connecting them.

The mysterious origin of an impressive cloud disturbance on Venus has now been revealed by a team including the University of Tokyo. Researchers used numerical models to show that an enormous 6,000-kilometer-wide atmospheric wave front, which circumnavigates the planet for days at a time, is caused by a large “hydraulic jump.” This is when a fluid abruptly slows down, changing from shallow and fast to deep and slow. On Venus, a sudden change in airflow in the lower cloud region is coupled with the creation of a strong updraft, forcing sulfuric acid vapor higher into the atmosphere where it condenses into a massive line of cloud. Future planetary studies can consider the potential impacts of this process, and what it might mean for any exploratory missions.   

"Super quasars" – extremely bright galactic centers powered by supermassive black holes – are the likely culprits behind galaxies shutting down star formation long before they should have in the very young universe, according to a Nature paper led by a team of University of Arizona astronomers.