Space may appear vast and empty, but it s full of cosmological objects that are invisible to the human eye. From our vantage point on Earth, many of these objects fall between astronomers and what they hope to observe, impacting what they find. This scenario was recently encountered by scientists at the U.S. National Science Foundation s Green Bank Observatory (GBO), who were attempting to study the Smith Cloud, tucked away behind dense layers of gas and dust in our own Milky Way galaxy.
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Peering deeply into the cosmos, NASA s James Webb Space Telescope is giving scientists their first detailed glimpse of supernovae from a time when our universe was just a small fraction of its current age. A team using Webb data has identified 10 times more supernovae in the early universe than were previously known. A few of the newfound exploding stars are the most distant examples of their type, including those used to measure the universe s expansion rate.
Astronomers have discovered a rare hypervelocity L subdwarf star racing through the Milky Way. More remarkably, this star may be on a trajectory that causes it to leave the Milky Way altogether.