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New Frontiers: U.S. Space Force, Zenno, and SpaceX Propel the Next Era of Space Innovation

The US Space Force is making headlines by awarding contracts to Viasat and Intelsat for new anti-jam communication satellites. These are part of a program to develop a jam-resistant satellite communication fleet, and it’s a pretty big investment—we’re talking hundreds of millions of dollars.On a global scale, there's some exciting news from Zenno Astronautics—they've become the first company to operate a superconducting product in space, which is a huge leap for space infrastructure technology.And if we zoom in a bit, there’s also a lot of buzz around SpaceX and its recent IPO. The company's shares have been soaring, and it’s causing a lot of excitement in the market.It’s definitely an exciting time in space industry! 
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Researchers find different evolutionary pathways for two subtypes of contact binaries

Secondary components of W UMa-type contact binaries exhibit an excess in radius and luminosity. Based on these two properties, Ph.D. student ZHANG Xudong, Prof. QIAN Shengbang, and Dr. LIAO Wenping from Yunnan Observatories of the Chinese Academy of Sciences revealed the different evolutionary pathways for A- and W-subtype contact binaries. Overluminosity in the A subtype is because the secondary components evolved from initially more massive stars, while in the W-subtype it is due to energy transfer. The study was published in Monthly Notices of the Royal Astronomical Society.

from Astronomy News - Space News, Exploration News, Earth Science News, Earth Science https://ift.tt/39T2mIP
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