Hubble Space Telescope Astronomers working with the Hubble Space Telescope predict that the Milky Way will collide with the Andromeda Galaxy in four billion years' time.
SpaceX SpaceX's unmanned Dragon capsule successfully returns to Earth following its demo mission to the International Space Station, landing intact in the Pacific Ocean. It is later recovered and shipped back to the United States.
Quebec After four days of negotiations with student leaders, the Quebec government pulls out of talks meant to end a mass student protest against tuition fees. Demonstrations have been ongoing since February 13, with more than 150,000 students on strike.
Ireland Voters in Ireland go to the polls for a referendum on whether the Irish government can approve the European Fiscal Compact.
Egypt Egypt formally ends its 31-year state of emergency, which gave security forces broad powers to suppress civil unrest and detain dissenters.
California California's prison system is facing a lawsuit from the Center for Constitutional Rights for its use of long terms of solitary confinement, some of which last decades.
Democratic Party A jury clears former Democratic Party candidate for Vice-President of the United States John Edwards on one count of corruption, with the judge ordering a mistrial on the other five counts.
Secretary of State for Culture, Media and Sport British Culture Secretary Jeremy Hunt appears at the Leveson Inquiry into media practices in the UK. The inquiry hears that he congratulated James Murdoch on the progress of News Corporation's takeover bid for BSkyB just hours before he was charged with overseeing it, but acted impartially once he took on the role. Prime Minister David Cameron says he will not order an inquiry into Hunt's ministerial conduct.
Petrol A nationwide strike against rising petrol prices closes shops and disrupts public transport in India, with the government facing widespread criticism over its economic management.
BBC Radio 4 BBC Radio 4 announces a five-and-a-half-hour celebration of James Joyce's "Ulysses" on this coming Bloomsday, claiming it as the novel's first full-length dramatisation in Britain.
Conservative Christian American conservative Christian lobby group One Million Moms launches a campaign against the decision of DC and Marvel Comics to include openly gay characters in their comics.
Germany A German engineer taken hostage by gunmen in Kano, Nigeria, in January is killed by his captors during a failed rescue operation by Nigerian forces.
Suicide bomber A suicide bomber kills five policeman at a police headquarters in the southern Afghan province of Kandahar.