Hey Siri: How much does this galaxy cluster weigh?

It's been nearly a century since astronomer Fritz Zwicky first calculated the mass of the Coma Cluster, a dense collection of almost 1,000 galaxies located in the nearby universe. But estimating the mass of something so huge ...

Study inspects two old open clusters

Using the San Pedro Martir Observatory and data from ESA's Gaia satellite, astronomers have inspected two old open clusters (OCs) known as NGC 1798 and NGC 1193. Results of the study, published July 13 on the arXiv pre-print ...

Webb reveals steamy atmosphere of distant planet in detail

NASA's James Webb Space Telescope has captured the distinct signature of water, along with evidence for clouds and haze, in the atmosphere surrounding a hot, puffy gas giant planet orbiting a distant Sun-like star.

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