Twitter has been at the centre of some key global events in its first 10 years, as well as starting and fuelling some of the most prominent trends of the digital world.

2006 – The first tweet

https://twitter.com/jack/status/20 Co-founder Jack Dorsey Tweeted first, when the service was called “Twttr.”

2007 – The hashtag appears

https://twitter.com/chrismessina/status/223115412 Early user Chris Messina proposed the use of a hashtag to denote people at the same live event.

2008 –  Ice on Mars

https://twitter.com/MarsPhoenix/status/839088619 When the Mars Phoenix Lander found ice on Mars, NASA used Twitter to break the news.

2009 – Plane on the Hudson

https://twitter.com/jkrums/status/1121915133 Early user Janis Krums happened to be on a ferry when a plane went down in the Hudson River.

2010 – Royal engagement

https://twitter.com/ClarenceHouse/status/4489951894835200 In a royal first, Clarence House, the Prince of Wales’ private office, created a Twitter account to announce Prince William’s engagement to Kate Middleton.

2011 – Bin Laden raid

https://twitter.com/ReallyVirtual/status/64780730286358528 Up late one night, Sohaib Athar inadvertently live-tweeted the raid on Osama bin Laden’s compound in Pakistan.

2012 – Obama’s second term

https://twitter.com/BarackObama/statuses/266031293945503744 Before he appeared publicly to affirm his second presidential win, President Obama noted it on Twitter. And within hours it became the most retweeted for the year.

2013 – Boston Marathon

https://twitter.com/BostonGlobe/status/323872661866442753 Two bombs shook the Boston Marathon – and the world. As news of the blasts and the manhunt spread, Twitter became crucial for journalists, police and citizens alike.

2014 – Fighting terror

https://twitter.com/obyezeks/status/459023928858804224?ref_src=twsrc%5Etfw The #BringBackOurGirls movement was created when more than 250 schoolgirls were abducted in Chibok, Nigeria by Boko Haram militants. Federal minister Oby Ezekwesili led the declaration of the #BringBackOurGirls hashtag.

2015 – Paris attacks

https://twitter.com/fhollande/status/665308718335070212 As the horrific attacks in Paris unfolded in November, the world united to support people in the City of Light using the hashtag #PrayForParis. Just 10 months prior, terrorists attacked the Paris offices of satirical magazine Charlie Hebdo. After that incident, citizens rallied around the phrase “Je Suis Charlie” to show their support and sorrow for the victims.

2016 – Leo finally wins

https://twitter.com/LeoDiCaprio/status/704368272511262724 #Oscars: Leonardo DiCaprio’s win for Best Actor in The Revenant generated 440,000 tweets per minute, more than @TheEllenShow’s selfie two years earlier.