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JWST Discovers Smallest Exoplanet Ever Directly Imaged

James Webb Space Telescope directly images its first low-mass exoplanet TWA 7b

From Hacker News Original Article Hacker News Discussion

The James Webb Space Telescope (JWST) has discovered its first new exoplanet, TWA 7b, notable for being the lowest-mass planet ever directly imaged outside our solar system. This young planet orbits the star CE Antilae about 111 light-years from Earth and was found within the star’s debris disk.

Why it matters: TWA 7b is ten times lighter than any previously imaged exoplanet, expanding our understanding of planet formation.

The big picture: JWST’s advanced infrared instruments and coronagraph enable direct imaging of faint, low-mass planets previously undetectable.

Stunning stat: TWA 7b’s mass is about 100 times Earth’s, or just 0.3 times that of Jupiter, making it uniquely light.

Commenters say: Many are impressed by JWST’s capabilities and excited about future exoplanet discoveries, while some discuss challenges of imaging faint planets near bright stars.