Analysis of 2.6 million Bluesky posts published from January 2023 to July 2025 referenced 532,000 academic articles. Bluesky has more than 38 million users and shares many features with X. Almost half of Bluesky science posts received at least ten likes, and one-third were reposted ten or more times. Interactions on Bluesky were about an order of magnitude higher than on X for likes and reposts, with quotes and replies nearly two orders of magnitude greater. Nearly half of Bluesky posts summarized academic articles, while only 6.3% merely named the article and journal, indicating more original research content.
They found that almost half of the posts about science on Bluesky garnered at least ten likes and that one-third were reposted ten or more times. Previous research on X has shown that the proportion of science posts receiving at least ten likes varied between 4% and 7.5%, and that the proportion receiving ten or more reposts ranged from 1.4% to 4.4%.
The team also reported that nearly half of Bluesky posts summarized academic articles and that only 6.3% simply mentioned the article name and journal. By contrast, 92% of original X posts about life and earth sciences and 17% of those in engineering and physical sciences referred to little more than the study title, according to a 2018 study in the Journal of Infometrics.
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