SORABUMI

From the cosmos, to you.

Being in the Habitable Zone Doesn't Guarantee Air: The 'Cosmic Shoreline' That Separates Planets

July 16, 2026

GJ 3378 b, a super-Earth found 25 light-years away, sits right in the middle of its habitable zone, soaking up about 90% as much starlight as Earth gets from the Sun. But the real test for finding life isn't distance — it's whether a planet can hold onto its atmosphere. SORABUMI explains the new yardstick astronomers call the cosmic shoreline.

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Stories

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Short fiction and serials set in space.

The Coldest Person in the Brightest House

July 13, 2026

In this town, the deeper you love someone, the more your body glows — and the colder you get. Kiyo's house, the brightest in town, is also the coldest. When a young neighbor pities her, Kiyo has an answer.

The Oldest of Seventeen Patches

June 23, 2026

On the lunar valley floor, the smartest, tallest machines crack first. Peta, a prototype with no model number, has somehow survived ten years. Its patchwork body carries a quiet little pride.