Dubbed “Mystic Mountain,” this is a region of the much more extensive Carina Nebula. In it, towers of cool hydrogen gas laced with dust are seen to rise along the nebula’s wall ...

An outburst of solar energy looks primed to hit Earth on Thursday, potentially bringing auroras to the northern U.S. on ...

Determining the expansion rate of the universe, the "Hubble constant," shapes our understanding of the cosmos, its age, and its fate.