When it launched in 2006, it was swamped with millions of hits in the first 48 hours. Since then, the site has been accessed by readers from every country in the world.
The Hubble images provide further evidence that the undisturbed galaxies are enshrouded by a "cushion" of dark matter, which protects them from their rough-and-tumble neighbourhood.
A few psychology journals have created incentives to increase interest in reproducible science for example, by affixing an 'open data' badge to articles that clearly state where data are available.
Though few comprehensive studies have been conducted, one by the University of Washington investigated how drug sample availability affected what physicians prescribe.
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