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Science & Space

The most popular blog posts about science & space on Hacker News. 422 posts.

2025
158

CubeSats are fascinating learning tools for space

These are CubeSats. Satellites that are going to space—or at least, the ones I have here are prototypes. But these have one thing in common: they're all powered by either a Raspberry Pi, or a microcontroller. There are already Pis in space, like on Mark Rober's SatGus, on GASPACS, and the Astro Pis on the Space…

161

Oxygen atoms discovered in most distant known galaxy

Two different teams of astronomers have detected oxygen in the most distant known galaxy, JADES-GS-z14-0. The discovery, reported in two separate studies, was made possible thanks to the Atacama Large Millimeter/submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner. This…

162

When Abandoned Mines Collapse

[Note that this article is a transcript of the video embedded above.] In December of 2024, a huge sinkhole opened up on I-80 near Wharton, New Jersey, creating massive traffic delays as crews worked to figure out what happened and get it fixed. Since then, it happened again in February 2025 and th

173

10 Years of Pomological Watercolors

A decade ago today I published a blog post calling for the US government to release its paintings of fruits. The Pomological Watercolor Collection, as I had recently come to know, is a beautiful and remarkable corpus of over 7,000 pictures of fruits and other biological specimens, made between the 1880s and 1940s…