[NASA] NASA’s Chandra Finds Young Stars Dim Quickly

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Scientists have found that young stellar cousins of our Sun are calming down and dimming more quickly in their X-ray output than previously thought, according to a study using NASA’s Chandra X-ray Observatory.

X-ray: NASA/CXC/Penn State Univ/K. Getman; Optical/IR: PanSTARRS; Image Processing: NASA/CXC/SAO/N. Wolk

These images, released on April 14, 2026, show two open star clusters, Trumpler 3 (left) and NGC 2353 (right). They represent a recent study from

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that shows how young Sun-like stars are dimmer in X-rays than previously thought.

This latest study looked at eight clusters of stars between the ages of 45 million and 750 million years old. The researchers found that Sun-like stars in these clusters unleashed only about a quarter to a third of the X-rays they expected. This quieting of young stars is a benefit for the prospects for life on orbiting planets around these stars — not a threat.

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Image credit: X-ray: NASA/CXC/Penn State Univ/K. Getman; Optical/IR: PanSTARRS; Image Processing: NASA/CXC/SAO/N. Wolk

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