This wikipedia page is just great, and includes such hits as:
|1 million||Highest estimated time until the red supergiant star Betelgeuse explodes in a supernova. The explosion is expected to be easily visible in daylight.|
|1.4 million||Gliese 710 passes within 1.1 light years of the Sun, potentially disturbing the Solar System’s Oort cloud and increasing the likelihood of a comet impact in the inner Solar System.|
|10 million||The widening East African Rift valley is flooded by the Red Sea, causing a new ocean basin to divide the continent of Africa.|
|11 million||The moon Phobos collides with the surface of Mars.|
Makes you think in a slightly longer time frame than what’s for dinner on Tuesday.