NASA's Voyager 2 probe, deep in its historic approach to Neptune, beamed back increasingly detailed images as it prepared for its closest flyby later that month.

NASA's Voyager 2 probe closed in on Neptune, beaming back the sharpest images yet seen of the solar system's outermost giant planet just days before its historic flyby.

NASA's Voyager 2 made its closest approach to Neptune, becoming the only spacecraft ever to visit the ice giant and revealing its Great Dark Spot and rings.

NASA's Voyager 2 made its closest approach to Neptune, the only spacecraft ever to visit the solar system's farthest major planet.

NASA's Voyager 2 probe made its closest approach to Neptune, the last planet on its grand tour, revealing the Great Dark Spot and the moon Triton's icy geysers.

NASA's Voyager 2 made its closest approach to Neptune, the only spacecraft ever to visit the giant blue planet, revealing its Great Dark Spot and moon Triton.

NASA's Voyager 2 made its closest approach to Neptune, the only spacecraft ever to visit the giant blue planet, revealing its Great Dark Spot and moon Triton.

Hungary's government opened its border with Austria to East German refugees, the first major breach in the Iron Curtain and a direct precursor to the Berlin Wall's fall.

Roughly half a million East Germans rallied in East Berlin's Alexanderplatz demanding democratic reform, five days before the Berlin Wall fell.

East Germany's government proposed sweeping travel reforms as hundreds of thousands protested in Leipzig and Berlin, days before the Wall fell.

East Germany's entire Communist cabinet resigned en masse amid mass protests, two days before the fall of the Berlin Wall would begin.

East German spokesman Günter Schabowski announced border crossings would open immediately, and jubilant Berliners tore down the Wall that had divided their city for 28 years.

A day after East Germany opened its borders, jubilant Berliners chiseled at the Wall with hammers as guards stood aside and champagne flowed atop the concrete.

Tens of thousands of Czechoslovaks gather in Prague demanding reform, momentum building toward the Velvet Revolution that would topple communist rule within days.

Days after the Berlin Wall's fall, East German authorities open additional checkpoints, accelerating the flood of citizens crossing freely into the West.

Salvadoran soldiers murder six Jesuit priests, their housekeeper, and her daughter at the University of Central America during the civil war.

Riot police violently dispersed a peaceful student demonstration in Prague, sparking a wave of mass protests that toppled Czechoslovakia's Communist government within weeks.

The United Nations General Assembly unanimously adopted the Convention on the Rights of the Child, which became the most widely ratified human rights treaty in history.

The UN General Assembly adopted the Convention on the Rights of the Child, becoming the most widely ratified human rights treaty in history.

Hundreds of thousands of Czechoslovaks packed Wenceslas Square as the Velvet Revolution's mass protests swelled on its third day, demanding the Communist government's resignation.

Gunmen linked to a political clan killed 32 journalists and dozens of others in an ambush near Ampatuan, the Philippines, in the deadliest single attack on press workers in history.

East Germany's parliament voted to delete the constitutional clause guaranteeing the Communist Party's leading role, formally ending one-party rule weeks after the Berlin Wall fell.

A gunman murdered 14 women at Montreal's École Polytechnique, singling out female engineering students in an attack that reshaped Canada's gun laws.

Protests erupted in Timișoara, Romania, after authorities tried to relocate a dissident pastor, igniting the revolution that would topple Nicolae Ceaușescu within two weeks.

American forces launched Operation Just Cause, sending 27,000 troops into Panama to remove dictator Manuel Noriega from power.