This is the first time China has trained astronauts using cave environments.

A total of 28 astronauts will participate in the training, divided into four teams.

Astronauts will conduct topographical surveying, environmental data recording, simulated communications, resource management, scientific research, and maintain daily life during the training.

During the training, astronauts will prioritize tasks and manage limited resources independently.

The China Astronaut Research and Training Center will conduct cave exploration training for astronauts from December 2025 to early 2026.

The average temperature in the cave is approximately 8 degrees Celsius, with humidity reaching up to 99%.

The training will take place in a natural cave located in Wulong District, Chongqing.

The cave environment simulates conditions expected during future lunar exploration, with limited communication and restricted visibility.

The aim of the training is to develop the ability to make autonomous decisions while performing tasks for extended periods in closed spaces.

Each team will live in the cave for six days and five nights while completing various tasks.

As a result of these investigations, the chosen training environment was selected.

衛星フェアリングの分離時に従来よりも加速度が大きかったことが分かっている。

H3ロケット9号機の打ち上げ延期の理由は、2025年12月のH3ロケット8号機の打ち上げ失敗の原因究明と、後続号機への影響評価を優先するためである。

宇宙航空研究開発機構（JAXA）はH3ロケット9号機による準天頂衛星システム「みちびき7号機」の打ち上げを延期した。

H3ロケット8号機は打ち上げから約4時間以内に地球に再突入した。

衛星フェアリング分離が今回のH3ロケット8号機の事象の起点になっている可能性がある。

JAXAはH3ロケット8号機を種子島宇宙センターから打ち上げたが、みちびき5号機を軌道投入する前に第2段エンジンの第2回燃焼が早く停止した。

The transaction indicates ongoing dynamics between traditional industry and financial capital, with potential effects on the structure and competitiveness of the space propulsion market.

The transaction reflects strategic reorganization dynamics among major aerospace groups.

The transaction involving L3Harris space propulsion is part of a broader context of consolidation and acquisitions in the space industry.

The acquisition allows AE Industrial Partners to strengthen its presence in the space market with an asset that has established capabilities and industrial relationships.

The presence of private equity funds indicates the growing maturity of the sector perceived as capable of generating value in the medium to long term.

L3Harris Technologies has reached an agreement to sell the majority stake of its space propulsion unit to AE Industrial Partners for $845 million.

For L3Harris, the sale is part of a capital reallocation strategy focusing on priority segments.

The increasing demand for satellites in low and complex orbits keeps the propulsion sector attractive to private investors.

The goal of such transactions is often to further develop the company by improving operational efficiency and supporting new technological programs.

This approach is increasingly common among large contractors balancing investments, innovation, and financial sustainability.

AE Industrial Partners is a private equity fund specializing in aerospace, defense, and government services investments.

The total value of the transaction, amounting to $845 million, highlights the strategic positioning of the asset and its technology and contract portfolio.

L3Harris’s space propulsion unit is key to the development and operation of space missions.

L3Harris will maintain a residual involvement but reduce direct exposure to a highly specialized sector.

Selling a majority stake does not imply complete exit from the space sector but signals a desire to optimize the portfolio and share industrial risk with a financial partner.

Le osservazioni hanno rilevato emissione di idrogeno-alfa nella controparte ottica di FAST J0139+4328.

FAST J0139+4328 è stata identificata per la prima volta nel 2023 con il radiotelescopio FAST.

I risultati evidenziano la necessità di un follow-up ottico approfondito per classificare i sistemi deboli selezionati da HI.

FAST J0139+4328 è una galassia a bassa luminosità superficiale.

FAST J0139+4328 è stata classificata come la prima galassia oscura isolata nell'universo vicino.

FAST J0139+4328 ha una luminosità assoluta totale pari a 11,1 milioni di luminosità solari.

Un team di astronomi guidato da Ana Mitrašinović ha scoperto una debole controparte stellare di FAST J0139+4328.

Il team di Mitrašinović sta pianificando ulteriori osservazioni spettroscopiche approfondite su FAST J0139+4328.

FAST J0139+4328 ha una massa stellare di 7,2 milioni di masse solari.

Il team ha riclassificato FAST J0139+4328 come una galassia nana LSB isolata.

Il rapporto tra massa gas e massa stellare di FAST J0139+4328 è di circa 11,5.

Questa scoperta ha stabilito l'associazione fisica di FAST J0139+4328 con la controparte ottica LSB.

La componente stellare di FAST J0139+4328 era al di sotto del limite di rilevabilità delle osservazioni precedenti.

Le osservazioni astronomiche hanno rivelato una chiara controparte ottica spostata di circa 30,3 secondi d'arco rispetto alle coordinate della nube HI.

La distanza di FAST J0139+4328 è stata stimata in circa 94 milioni di anni luce.

Astronomi serbi e russi hanno condotto osservazioni ottiche profonde di una nube di idrogeno atomico neutro denominata FAST J0139+4328.

Each additional year of operation for Swift enriches unique data archives that are difficult to replicate with new missions in the short term.

Swift has provided essential data for astrophysics, improving the understanding of extreme events in the universe.