In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

Its primary mirror consists of 18 hexagonal segments with a total width of 6.5 meters and a weight of 40 kilograms. For comparison, the Hubble mirror is only 2.4 meters (21 feet and four inches ...

Astronomers used the powerful James Webb Space Telescope to sleuth out some of these objects, called brown dwarfs, in a vibrant star-forming region of our galaxy called the Flame Nebula. Brown dwarfs ...

Astronomers used the powerful James Webb Space Telescope to peer into this object flying by itself through our Milky Way ...

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Satellites come in all shapes and sizes, but there aren't any that look quite like SPHEREx, an infrared observatory NASA ...

The universe is ballooning outward at an ever-faster clip under the power of an unknown force dubbed dark energy. One of the ...

The Webb telescope — a scientific collaboration between NASA, ESA, and the Canadian Space Agency — is designed to peer into ...

This week’s properties are a six-bedroom country house in Sherman, Conn., and a five-bedroom ranch-style house in Syosset, ...

With a sun more than 4.5 billion years old, our solar system is considered "middle-aged," and the pictures of what it might ...