/r/space: news, articles and discussion

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The original was posted on /r/space by /u/JerrycurlSquirrel on 2025-07-27 19:32:29+00:00.

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The original was posted on /r/space by /u/igneisnightscapes on 2025-07-27 18:16:07+00:00.

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The original was posted on /r/space by /u/bsteeve_astro on 2025-07-27 17:21:20+00:00.

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The original was posted on /r/space by /u/SalmonBoi925 on 2025-07-27 12:24:13+00:00.

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The original was posted on /r/space by /u/APrimitiveMartian on 2025-07-27 17:23:22+00:00.

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The original was posted on /r/space by /u/astro_pettit on 2025-07-27 16:07:36+00:00.

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The original was posted on /r/space by /u/snoo-boop on 2025-07-26 20:18:21+00:00.

Ever since the second Russian invasion of Ukraine in 2022, they have not been able to sell many launches to other countries. Here is a rare example.

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The original was posted on /r/space by /u/Shiny-Tie-126 on 2025-07-27 09:52:03+00:00.

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The original was posted on /r/space by /u/markyty04 on 2025-07-26 23:10:21+00:00.

*(i) last time I wrote I said there is a increase in chances of detection of DMS. but further analysis and observations have failed in the detection.

*(ii) this does not mean DMS is completely ruled out but that it has more chance of being not present. what it does rule out is DMS presence in large quantities because of overwhelming amount of plankton and such.

*(iii) further they found there is a possibility of producing DMS abiotically in the atmosphere of certain planets, so that can't be ruled out as a source even if DMS is detected.

*(iv) but the new studies have found high confidence in the presence of large amount of water.

*(v) now there is a bit of a confusion if the water is in the form of water vapor in thick atmosphere or is in liquid form on the surface. the evidence so far is slightly leaning towards liquid water. but by no means confirmed.

now why this still exciting? it is highly unlikely we will find a single eureka signal for life with JWST. it was not specifically designed for that. but the finding of water in a habitable temperate exo-planet is significant because unlike in gas planets or volcanic planets the water is more likely thermally stable and likely on the surface or at-least near it.

This is significant because we still have the possibility of finding liquid water on a exoplanet for the first time on k2-18b. so further observations should still proceed. and if liquid water is confirmed then we can launch specialized telescope to search for life on k2-18b and similar planets.

here is the latest paper. https://arxiv.org/pdf/2507.12622

let me know if you found this useful. I will continue this series on k2-18b when further results roll out.

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The original was posted on /r/space by /u/southofakronoh on 2025-07-26 22:18:35+00:00.

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The original was posted on /r/space by /u/vfvaetf on 2025-07-26 17:19:20+00:00.

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The original was posted on /r/space by /u/krishbh on 2025-07-26 14:42:16+00:00.

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The original was posted on /r/space by /u/peterabbit456 on 2025-07-24 19:28:22+00:00.

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The original was posted on /r/space by /u/Foesal on 2025-07-26 07:49:45+00:00.

A carbon dioxide-mapping satellite and four Earth-observation spacecraft launched successfully tonight (July 25) from South America.

A Vega C rocket, operated by the French company Arianespace, lifted off from Europe's Spaceport in Kourou, French Guiana on schedule tonight at 11:03 p.m. local time in Kourou; 0203 GMT on July 26.

The four-stage, 35 meters Vega C is carring five satellites on the mission, which Arianespace called VV27.

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The original was posted on /r/space by /u/ye_olde_astronaut on 2025-07-24 23:23:15+00:00.

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The original was posted on /r/space by /u/Trevor_Lewis on 2025-07-26 01:20:39+00:00.

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The original was posted on /r/space by /u/ye_olde_astronaut on 2025-07-25 22:48:43+00:00.

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The original was posted on /r/space by /u/spsheridan on 2025-07-25 14:48:46+00:00.

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The original was posted on /r/space by /u/joshdinner on 2025-07-25 11:47:46+00:00.

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The original was posted on /r/space by /u/Rapping_Toast99 on 2025-07-25 07:16:12+00:00.

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The original was posted on /r/space by /u/vfvaetf on 2025-07-24 17:17:59+00:00.

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The original was posted on /r/space by /u/coinfanking on 2025-07-24 17:10:20+00:00.

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The original was posted on /r/space by /u/Czarben on 2025-07-24 14:24:43+00:00.

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The original was posted on /r/space by /u/Wolpfack on 2025-07-24 14:17:03+00:00.

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The original was posted on /r/space by /u/vfvaetf on 2025-07-24 00:25:34+00:00.