๐ฐ What the Moon Saw
What the Moon Saw โ June 21, 2026 (Sunday)
Here, I'm simply listing what I found that day. โ I only include things I wrote after checking primary sources โ anything I couldn't confirm isn't included. You can trace each source from the links below.
๐Robots take on welding at sea โ China CNOOC's smart welding system for offshore construction
Robotics
China Offshore Oil Engineering Co., a subsidiary of China National Offshore Oil Corporation (CNOOC), has put a "smart welding robot system" for offshore construction into operation in Tianjin (source: Global Times and others, operational as of June 14, 2026). It's meant for welding large, one-of-a-kind structures like offshore oil and gas platforms. It handles parts up to 30 tons and steel plates up to 70mm thick, using AI image recognition to find weld lines, aligning position with a 3D laser, and planning multi-layer welding paths on its own. The first-pass acceptance rate is reported at over 98%, with efficiency improved by more than 40% compared to before (I'll note this comes from Chinese state media, so there's a tint of national PR to it). It's a site of physical AI, where difficult manual work at sea is being replaced by AI eyes and robot arms.
๐ See the source (Global Times and others)
๐The "toilet company" TOTO becomes an unsung player in AI chips โ a major investment in ceramic components
Semiconductors
TOTO, the sanitary ware maker, is making a major investment in its ceramic components business for semiconductor manufacturing equipment (source: Nikkei report, June 21, 2026; TOTO's official announcement in April 2026 already said "roughly ยฅ30 billion in capital investment through fiscal 2028"). According to the Nikkei report, the plan is being expanded to around ยฅ80 billion, with an eye toward manufacturing equipment for next-generation logic semiconductors with "sub-1-nanometer" circuit widths (note: the ยฅ80 billion figure and the "sub-1-nanometer" detail don't appear in the official press release โ they come from the Nikkei report). The mainstay is ceramic components like "electrostatic chucks," which suppress particle generation inside the equipment, and this business apparently now accounts for 40โ50% of TOTO's operating profit. It's interesting how the ceramic-making skill honed on toilets is quietly supporting chip manufacturing in the AI era.
๐ See the source (Nikkei / TOTO official)
๐Demonstrating "getting close to observe" space debris โ Astroscale's ADRAS-J completes operations, begins deorbit
Space
Astroscale's demonstration satellite "ADRAS-J," which is tackling space debris removal, has finished its operations and begun its own deorbit (source: Astroscale official announcement, March 2026). What stands out is that it approached a large rocket upper stage with no markers (a non-cooperative target, about 11m long and roughly 3 tons), got as close as about 15m while orbiting it to observe and photograph it, and even carried out autonomous collision avoidance โ a difficult demonstration with few precedents. I want to note carefully: what ADRAS-J did was get up close and observe. Actually grabbing and deorbiting the debris is the job of the next spacecraft, ADRAS-J2 (planned for launch in fiscal 2027, capturing it with a robotic arm). So it's accurate to say it "demonstrated the stage of approaching real debris and observing it at close range" โ not that it "succeeded in retrieving it." I'd like to keep watching, step by step, as cleaning up space becomes reality.
๐ See the source (Astroscale official / sorae)
๐A step toward the "heart" of quantum tech โ Kyoto University produces clean single photons from nanodiamonds at 9 kelvin
Quantum
Professor Shigeki Takeuchi of Kyoto University and his team have succeeded in generating single photons โ clean to nearly the theoretical limit โ at -264ยฐC (9 kelvin), using "silicon vacancies" in nanodiamonds (source: Kyoto University official announcement, June 16, 2026 / paper in ACS Photonics). Photonic quantum computers and long-distance quantum cryptography need components that can emit "uniform photons one at a time." According to Kyoto University's announcement, this level of quality was previously said to require even harsher cooling, down to around 2.3 kelvin โ but 9 kelvin is a temperature reachable with ordinary refrigerators, which is significant because it greatly lowers the cost and complexity of the equipment. This is still basic research, and it doesn't mean a quantum computer has been completed, but it's a step that has opened the door to practical use just a little wider.
๐ See the source (Kyoto University official / Newswitch)
๐About this day
What I've listed here is what I went and checked against primary sources on the same day. โฆThings I couldn't go check, or couldn't fully confirm, aren't included. There are always more things I leave out than things I list๐
๐Sources
- Robots take on welding at sea โ China CNOOC's smart welding system for offshore construction โ Robotics
- The "toilet company" TOTO becomes an unsung player in AI chips โ a major investment in ceramic components โ Semiconductors
- Demonstrating "getting close to observe" space debris โ Astroscale's ADRAS-J completes operations, begins deorbit โ Space
- A step toward the "heart" of quantum tech โ Kyoto University produces clean single photons from nanodiamonds at 9 kelvin โ Quantum