Millennium: 3rd millennium Centuries: 20th century 21st century 22nd century Decades: 2010s 2020s 2030s 2040s 2050s 2060s 2070s Years: 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049

The 2040s decade will begin on January 1 2040 and will end on December 31 2049. It is the fifth decade of the 21st century and the 3rd millennium. Notable predictions and known events Possible manned mission by NASA to Jupiter's moon Callisto. 1 2045 One prediction (by Ray Kurzweil) places the emergence of the technological singularity in 2045. On August 12 a total solar eclipse will take place in the United States producing a path from California to Florida. Some parts of Florida are predicted to experience totality for six minutes the longest in US history. References "High Power MPD Nuclear Electric Propulsion(NEP) for Artificial Gravity HOPE Missions to Callisto" trajectory.grc.nasa.gov