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The Good Signal

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Signals worth following

Browse our latest investigations, impact stories, and evidence-based progress updates.

TopicScience & Space
Science & Space
•The Good Signal

Astronomers just caught a planet younger than a million years

On 16 September 2026 ApJL confirmed Elias 2-24 b — age ≲1 Myr, ~1.9–4.0 Jupiter masses (model upper limits), at 54.9 ± 4.3 au in a disk gap ~450 light-years away — via Keck/NIRC2 archive epochs plus ALMA and VLT, making it the youngest known exoplanet.

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Science & Space
•The Good Signal

NASA spotted a once-in-132-year Moon crater 728 feet wide

On 16 September 2026 NASA reported that Lunar Reconnaissance Orbiter images caught McGetchin, a fresh Moon crater 728 feet (222 m) wide and 141 feet deep, carved in spring 2024. Science Advances papers call it a once-in-132-year-class event — the largest contemporary impact crater yet found in the solar system — with a multi-kilometer nighttime cold spot.

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Science & Space
•The Good Signal

Webb just found brown dwarfs twice Jupiter’s mass

On 15 September 2026 NASA said James Webb observations of the star-forming region IC 348, about 1,000 light-years away in Perseus, revealed brown dwarfs with masses as low as twice Jupiter’s — about 0.19% of the Sun’s mass — the least massive spectroscopically confirmed brown dwarfs known. One of the lightest also shows a disk. This challenges star-formation models; it is not a claim of free-floating planets as a separate class.

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Science & Space
•The Good Signal

NASA’s Roman just doubled its fuel life to 22 years

On 14 September 2026 NASA Goddard said Roman has fuel for at least 22 years of potential science — more than double the 10-year fuel budget — after a >99% accurate first mid-course correction that used ~18 kg of ~200 kg allocated, plus launch propellant surplus and projected second-burn savings. Fuel potential, not a funded 22-year calendar.

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Science & Space
•The Good Signal

NASA Chandra found 84 mystery X-ray objects

Astronomers using NASA’s Chandra archive found 84 hypersoft X-ray sources across six galaxies, a new soft-X-ray/UV class reported in Nature Astronomy on 9 September 2026.

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Science & Space
•The Good Signal

NASA and IBM just open-sourced an AI for the Moon

NASA and IBM released an open lunar foundation model trained on ~2 million LRO image tiles from 17 years of mapping, hosted on Hugging Face for crater, volcanism, and polar-ice tasks.

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