Observations of young massive star clusters reveal a tentative difference in the dust reddening measured from ultraviolet spectral slopes and from ratios of hydrogen spectral line strengths.
Analysis of the Bjurböle meteorite’s impact onto sea ice shows that the fragmentation pattern of this projectile is different from other asteroid boulders, possibly due to its high porosity.
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.