Dangerous asteroid around
The 2004 MN4 asteroid got one of the highest impact risks in history. Right now it is 4 on the Torino scale, meaning that a hit is not unrealistic. The orbit of the asteroid is still not 100% known, subsequent updates will either increase or reduce its impact risk. In any case, if the risk will remain high humanity has about 25 years to prepare until the asteroid comes (and that will result in substantial progress of space technology).