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...Exotic matter is a hypothetical form of matter theorized to contain unusual properties often characterized by a negative energy density, meaning it would have a negative mass or exert a repulsive gravitational force. Wormholes would require a shell of exotic matter, but just like wormholes, exotic matter has never been observed and is considered hypothetical. ... read full post
The next four-person team to live and work aboard the International Space Station departed from NASA's Kennedy Space Center in Florida on Friday, taking aim at the massive orbiting research complex for a planned stay of six to eight months.
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Although NASA and its counterpart in Russia, Roscosmos, continue to work together on a daily basis, the leaders of the two organizations have not held face-to-face meetings since the middle of the first Trump administration, back in October 2018.
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Link to the actual research paper
paywall bypass: https://archive.is/N7m24
Named L 98-59f, this planet is a non-transiting super-Earth with a minimal mass of 2.8 Earth masses on a 23-day orbit inside the habitable zone of the small red dwarf L 98-59.
L 98-59, also known as TOI-175, TIC 307210830, is an M dwarf about one-third the mass of the Sun.
The system lies approximately 34.5 light-years away in the southern constellation of Volans.
Betelgeuse, one of the most famous stars in the night sky, has a close companion, and that may explain why it dimmed dramatically in 2019-20. ... read full post
Paper - summarizes the key findings ... read full post