1. The first tweet
The project code was first called 'twttr' which was then changed to Twitter.
just setting up my twttr
— Jack (@jack) March 21, 2006
2. The first hashtag (#)
The first hashtag used was #barcamp.
how do you feel about using # (pound) for groups. As in #barcamp [msg]?
— Chris Messina ✌︎ (@chrismessina) August 23, 2007
3. The first tweet from space
The first ever live tweet from space was by astronaut TJ Creamer.
Hello Twitterverse! We r now LIVE tweeting from the International Space Station -- the 1st live tweet from Space! :) More soon, send your ?s
— TJ Creamer (@Astro_TJ) January 22, 2010
4. The first flower grown in space
Scott Kelly regularly posts pictures from outer space and he tweeted the picture of the first flower grown in space.
First ever flower grown in space makes its debut! #SpaceFlower #zinnia #YearInSpace pic.twitter.com/2uGYvwtLKr
— Scott Kelly (@StationCDRKelly) January 16, 2016
5. Most retweeted tweet ever
Ellen's Oscar picture broke Barack Obama's record for the most retweets in 2014.
If only Bradley's arm was longer. Best photo ever. #oscars pic.twitter.com/C9U5NOtGap
— Ellen DeGeneres (@TheEllenShow) March 3, 2014
