People often ask: "how big is the biggest star?" But I reckon the more interesting question is how small are the smallest stars? Because when you get down to the smallest stars, there's a huge grey area between what is a star and what is a planet. Sub-brown dwarfs, planemos, rogue planets - how do we actually tell them apart?

Luham et al. (2004) - confirmation of OTS44: https://arxiv.org/abs/astro-ph/0411445

Zapatero Osorio et al. (2002) - the discovery of S Ori 70 - https://arxiv.org/abs/astro-ph/0206353

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👩🏽‍💻 Dr Becky Smethurst is an astrophysicist researching galaxies and supermassive black holes at Christ Church at the University of Oxford.
http://drbecky.uk.com
https://rebeccasmethurst.co.uk