A new catalog enables the study of flares from compact stars, which are poorly understood; however, many of the catalog entries are complicated by contamination from nearby stars.
Modeling shows that dynamic processes in coronal loops could be responsible for the unexpectedly strong ultraviolet spectral lines from lithium- and sodium-like ions.
Super-puff exoplanets containing more than 10 times Earth’s mass could feasibly have formed with the large gaseous envelopes they have today, although they could have also been inflated by tidal circularization.
New simulations show that when the first stars in the universe are disrupted by black holes, the signals from these events should be distinguishable from tidal disruption events in the local universe.
Martian soil simulant, a vacuum chamber, a centrifuge, and a halogen lamp come together to create a laboratory simulation of dust grains sliding down inclined surfaces on Mars.
Using simulations, researchers show how jets from a spinning, accreting supermassive black hole can fizzle out, potentially explaining galaxies without radio emission past a certain radius.