★★★★★
First image of a black hole released
The Event Horizon Telescope collaboration releases the first direct image of a black hole, at the centre of the galaxy M87.
Science
- 2019
- 1998★★★★★
Good Friday Agreement
The British and Irish governments and Northern Ireland's parties sign a peace agreement, ending most of the violence of the Troubles.
Treaty· United Kingdom, Ireland - 1815★★★★★
Eruption of Mount Tambora
The most powerful volcanic eruption in recorded history occurs on Sumbawa, causing the global "Year Without a Summer" of 1816.
Disaster· Indonesia