This is a list of events that occurred in 2251:
- With the Earth supply embargo in its second month, food and supplies become increasingly scarce on the Mars Colony resulting in an open riot. Earthforce is subsequently brought in and goes about brutally putting down the riots. Among the Earthforce officers is Commander John Sheridan who at one point becomes separated from his unit and unexpectedly rescues fellow officer and old Academy acquaintance Jeffrey Sinclair from a group of rioters.
- The Martian Food Riots are finally put down by Earthforce and EarthGov imposes a Mars Provisional Government answerable directly to Earthdome.
- Thursday April 3, 2251
- At 00:05 EST the death of personality via mindwipe is carried out on Charles Dexter, a notorious serial killer known as the "Black Rose Killer" on Earth Colony 3 in the Orion System. At the facility where his mindwipe occurs, there is a fire and he is presumed killed. He survives and eventually becomes Brother Edward.
|Before the Third Age:||20th Century and earlier 21st Century 22nd Century 2200s 2210s 2220s 2230s 2240s|
|2250s:||2250 2251 2252 2253 2254 2255 2256 2257 2258 2259|
|2260s:||2260 2261 2262 2263 2264 2265 2266 2267 2268 2269|
|2270s onwards:||2270s 2280s 2290s 2300s and beyond|