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Japan wants to bring artificial gravity to the moon

The proposed 1,300-foot-tall lunar structure would spin three times every minute, generating Earth-like gravity for its inhabitants.

Jul 12 (gizmodo.com) - Interest in the Moon has been reignited recently, and Japan is looking to get in on the fun. Researchers and engineers from Kyoto University and the Kajima Corporation have released their joint proposal for a three-pronged approach to sustainable human life on the Moon and beyond.

The future of space exploration will likely include longer stays in low gravity environments, whether in orbit or on the surface of another planet. Problem is, long stays in space can wreak havoc on our physiology; recent research shows that astronauts can suffer a decade of bone loss during months in space, and that their bones never return to normal. Thankfully, researchers from Kyoto University and the Kajima Corporation are seeking to engineer a potential solution.

The proposal, announced in a press release last week, looks like something ripped straight from the pages of a sci-fi novel. The plan consists of three distinct elements, the first of which, called “The Glass,” aims to bring simulated gravity to the Moon and Mars through centrifugal force.

Gravity on the Moon and Mars is about 16.5% and 37.9% of that on Earth, respectively. Lunar Glass and Mars Glass could bridge that gap; they are massive, spinning cones that will use centrifugal force to simulate the effects of Earth’s gravity. These spinning cones will have an approximate radius of 328 feet (100 meters) and height of 1,312 feet (400 meters), and will complete one rotation every 20 seconds, creating a 1g experience for those inside (1g being the gravity on Earth). The researchers are targeting the back half of the 21st century for the construction of Lunar Glass, which seems unreasonably optimistic given the apparent technological expertise required to pull this off.

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Bear attacks are reaching unprecedented levels across Japan, with a record 12 fatalities so far this year as sightings continue daily from mountain towns to city centers, disrupting schools and local institutions.

Tokyo’s Shibuya Ward has installed barricades around the Hachiko statue in front of Shibuya Station as part of safety measures ahead of Halloween on October 31st.

The Liberal Democratic Party, Nippon Ishin no Kai, and Komeito have reached an agreement on the framework for Japan’s new free high school tuition program, which will begin in fiscal 2026. Under the plan, tuition support for private full-time high schools will be capped at 457,000 yen, while correspondence courses will have an upper limit of 337,000 yen.

Bear sightings have surged across Japan, and in Gifu Prefecture’s Shirakawa Village—home to the UNESCO World Heritage site of Shirakawa-go—local authorities held a nighttime drill on October 28th to prepare for possible emergencies.

The Japan Mobility Show opened on October 29th, marking the start of Japan’s premier automotive exhibition, where foreign manufacturers are stepping up their entry into the country’s growing electric vehicle (EV) market.

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Astronaut Yui Kimiya, currently on a long-term mission aboard the International Space Station (ISS), successfully captured a newly developed supply spacecraft using the station’s robotic arm in the early hours of October 30th.

JR Central announced that the construction cost of the Linear Chuo Shinkansen between Shinagawa and Nagoya is now expected to increase by 4 trillion yen from the previously planned 7 trillion yen, bringing the total to 11 trillion yen.

太陽光発電の新たな選択肢として注目されている「フレキシブルソーラーパネル」。軽量で曲面にも設置でき、アウトドアや災害時はもちろん省スペースな住宅にも最適です。

Japan’s H3 Rocket No. 7, carrying a newly developed unmanned cargo spacecraft, successfully launched from the Tanegashima Space Center in Kagoshima Prefecture at 9 a.m. on October 26th, marking another milestone for the nation’s space program.

Geothermal energy is drawing growing global attention as a key to combating global warming and achieving a decarbonized society. Among clean energy sources, it stands out for its stability and scalability. Japan, blessed with abundant volcanic activity, possesses the world’s third-largest geothermal reserves—yet its utilization remains limited.

A next-generation hydrogen-powered vessel that operated during the Expo is set to expand its role beyond the event.

A rare astronomical event will unfold next week as Comet Lemmon makes its closest approach to Earth on October 21st, offering skywatchers a once-in-a-lifetime spectacle that will not return for roughly 1,400 years.

The Japan Meteorological Agency announced that satellite images from the Himawari-9 weather satellite are currently unavailable due to a communication failure. While some functions have been restored through the backup satellite Himawari-8, key nighttime observation data such as infrared imagery remain inaccessible.