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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, 2022 (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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Typhoon No. 31 remained a very strong storm over the western Pacific as of 3 p.m. Japan time on October 27, with forecasts indicating that it could approach Japan's Ogasawara Islands around November 1, bringing potentially violent winds, dangerous waves and disruptions to maritime transportation, while uncertainty over its northward turn raised concerns about prolonged storm conditions.

Travel disruption continued into Tuesday, October 27, as Japan began recovering from heavy rain and rough seas caused by the remnants of Typhoon No. 30, with ferry cancellations confirmed in Nagasaki Prefecture and railway operators monitoring the effects of overnight rainfall in central and eastern Japan.

A controversial penalty shootout decision during the Tokyo qualifiers for Japan's National High School Soccer Championship on October 24 has sparked debate after a team that believed it had secured victory was forced to continue playing and eventually lost, raising questions about whether a hole in the goal net contributed to an incorrect ruling.

The underground platform of the planned Kanagawa Prefecture Station on Japan's Chuo Shinkansen maglev line was opened to the public for the first time on October 24, offering visitors a rare glimpse of the high-speed railway project under construction in Sagamihara, Kanagawa Prefecture, with demand for the tour exceeding available places by approximately 12 times.

Japanese drone manufacturer Terra Drone has delivered interceptor drones to Ukraine's Ministry of Defense for the first time, prompting Russia to threaten retaliatory measures on October 21, as Japan considers expanding domestic drone production and strengthening its coastal defenses through thousands of unmanned aircraft.

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