Between 4:35am on Saturday September 4, 2010 and 2:00pm on Sunday 18 September, 2010, there have been nearly 700 aftershocks, with more expected. Aftershocks may continue for weeks.
update: A month afterwards and we have had over 2000 aftershocks in Canterbury now. Though the frequency is now decreasing they are still happening with some a few rarer ones still being 4.6 - 5 on Richter scale.
There are excellent articles on both the Canterbury earthquake and the Christchurch earthquake in wikipedia.
there was 6,000 people injured in the Feburary earthquake
The Christchurch earthquake was a magnitude of 6.3
It's very possible that Christchurch could have another earthquake. However, the possibility is low, as Christchurch had no major earthquake before the earthquake in 2010.
a lot
The date of the Christchurch Earthquake was September 4, 2010. The earthquake hit at 4:35am.
1
130,000
the Christchurch cathedral
2 people were injured in the Christchurch earthquake. There was one death. The person died from a heart attack although no one knows if the heart attack was caused by the earthquake or not.
the Christchurch cathedral
65 people were killed in the New Zealand earthquake in Christchurch.