![]() This is ensuring a legacy dataset for a wide range of astrophysical topics. The comprehensive program will build a dataset that can be used to create a spectral library of stellar "templates" for capturing the diversity of stars. To better understand stars and their evolution, the Space Telescope Science Institute has launched an ambitious new initiative with the Hubble Space Telescope called ULLYSES (UV Legacy Library of Young Stars as Essential Standards). ![]() Stars' behavior over their lifespan relates to everything from planets to the formation and evolution of galaxies. Because stars are the universe's LEGO blocks for building immense galaxies, astronomers are always seeking a much better understanding of their birth and death. Our Sun is roughly midway between these populations. They span a broad range of sizes, ages, and temperatures from diminutive red, cool, low-mass stars to opulent blue, hot, massive stars. Roman-Duval (STScI), ULLYSES program, and R. The target stars are from Hubble archival observations (yellow circles) and new observations (blue circles) under the ULLYSES program. The LMC contains hot, massive, blue stars, similar to the primitive composition of early galaxies, so astronomers can gain insights into how their outflows may have influenced early galaxy evolution billions of years ago. ![]() The program's goal is to give astronomers a much better understanding of the birth of stars and how this relates to everything from planets to the formation and evolution of galaxies. The program is looking at over 300 stars to build an ultraviolet-light catalog for capturing the diversity of stars, from young to old. The galaxy is one of several select targets of a new initiative with NASA's Hubble Space Telescope called ULLYSES (UV Legacy Library of Young Stars as Essential Standards). This is a ground-based telescopic photo of the Large Magellanic Cloud (LMC), a satellite galaxy of our Milky Way. ![]()
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