The vast Tarantula Nebula in the Large Magellanic Cloud is the largest stellar nursery in the local universe and as such, an ideal laboratory for studying the birth and evolution of massive stars. This region on the outskirts of the Tarantula, known as LHA 120-N 150, features an exceptionally high concentration of massive suns. Theory suggests such stars should form within star clusters, but about 10 percent of those found in LHA 120-N 150 seemingly formed in isolation. Astronomers are using the Hubble Space Telescope to better understand whether the isolated stars truly formed alone or simply moved beyond the clusters in which they were born.
A ghostly “head” stares out from the depths of space in this Hubble Space Telescope image of two galaxies crashing into each other 704 light years away, a captivating harbinger of Halloween. The photo was captured in an ongoing survey of interacting galaxies to learn more about how such systems evolve.
Astronomers using observations from the NASA/ESA Hubble Space Telescope and NASA’s Chandra X-ray Observatory have studied how dark matter in clusters of galaxies behaves when the clusters collide. The results show that dark matter interacts with itself even less than previously thought, and narrows down the options for what this mysterious substance might be.