Two massive quiescent galaxies that are among the brightest galaxies in their home cluster are in the process of merging; the merger product may well be the brightest galaxy in the cluster.
Data from the Chandra X-ray Observatory suggest that the X-rays from the galactic center “chimney” come from a cylindrical column of plasma that may be energized by a series of accretion events.
A newly discovered planet in the HD 104067 system is likely rocky, and the tidal tugs of its planetary siblings might raise its surface temperature as high as 2600K, making it glow like a lightbulb.
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.