On 30th July 2020, an Atlas V-541 rocket left the pad at Complex 41 in Cape Canaveral Air Force Base in Florida. On-board was @NASAPersevere – a rover destined for Mars. Since then, Perseverance (or Percy) has been on its way to the Red Planet #CountdownToMars (1/x) All going well, at 11.15 am PST on Thursday 18th (that’s 8.15 am on 19th for those of us in NZ) @NASA will start livestreaming the landing broadcast. You can follow along on YouTube #CountdownToMars (2/x)

February 1st is a day of celebration for Irish people - for women, in particular. These days, it's branded as #StBrigidsDay, named after a catholic nun who went on to become one of Ireland's patron saints. But there was another Brigid that came before her (1/n) Brigid was a Celtic Goddess, and one of the Tuatha Dé Danann - a tribe of gods who were said to inhabit ancient Ireland before the arrival of humans (2/n)

Hi tweeps! Remember back in March, I made a mega-thread of amazing #WomenInSTEM that you should follow, especially for #IWD2018? If not, here's the 'moment' I made from it twitter.com/i/moments/9718… Well, today (19 Nov) is #InternationalMensDay #IMD2018, and I wanted to mark the occasion. So here are SIXTY men working in STEM who also happen to be some of my favourite tweeps. This is by no means an exhaustive list - please don't be offended if you're not on it!