1. The first ever tweet from outer space:
In January, astronaut Scott Kelly made history by becoming the first person to tweet from outer space. His message? “Hello, world!”
2. The most retweeted tweet of all time:
In May, Ellen DeGeneres’ star-studded selfie from the Oscars became the most retweeted tweet of all time, with more than 3.3 million retweets.
3. The birth of the #FillTheBoot campaign:
In June, the International Association of Firefighters launched the #FillTheBoot campaign to help raise money for muscular dystrophy research.
4. The first ever Tweetup in space:
In September, NASA astronauts aboard the International Space Station held the first ever Tweetup, connecting with social media users from around the world.
5. The #IceBucketChallenge goes global:
The #IceBucketChallenge went viral in August, with people from all over the world posting videos of themselves dumping ice water on their heads to raise awareness for ALS.
In June, the US Supreme Court legalized same-sex marriage nationwide, and the #LoveWins hashtag quickly trended on Twitter.
In February, the Internet was divided over the color of a dress, with some people seeing it as blue and black, and others seeing it as white and gold.
In March, actor Robin Thicke sparked a Twitter firestorm when he asked users to tweet him questions using the hashtag #AskThicke. The questions, which were mostly about his controversial song “Blurred Lines,” were quickly deleted.
In March, comedian Stephen Colbert came under fire for a joke he made about Chinese President Xi Jinping. The #CancelColbert hashtag trended on Twitter, but Colbert kept his job.
In June, rumors spread that Twitter was going to shut down, leading the #RIPTwitter hashtag to trend. The rumors turned out to be false, and Twitter is still going strong.
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