2049

If Not Delayed, The Space Elevator would be almost finished at height of 99,999.6 km or 99,999,600 m
 * May 7 – Transit of Mercury.[1]
 * December – The very earliest and possible response signal from the Gliese 581 planetary system, should there be one by intelligent extraterrestrial life, will be received. A signal was transmitted to the Gliese 581 planetary system in August 2009, taking about 20.3 years to reach its destination.
 * December 20 – The present "One country, two systems" with Macau, guaranteed for 50 years starting from December 20, 1999, provided under the Basic Law, will expire.[2]