On March 4, 2016 (4 weeks from now):
insight is scheduled for launch
InSight's goal is to study geology on Mars. It is scheduled for launch on March 4, 2016 by JPL.
Unlike Curiosity (or Opportunity or Spirit*), InSight is planned to be a strictly stationary lander.
More: Wikipedia | JPL
*Spirit is now a stationary "rover." Its wheels are stuck, but it keeps science-ing!
On July 4, 2016 (5 months from now):
juno will insert into orbit around jupiter
Juno was launched in 2011 and will spend 5 years journeying to Jupiter. It will arrive in July of 2016 and insert into a polar orbit around the gas giant.
The only time Juno has been out of sunlight was for ten minutes, when it passed back by Earth in 2013.
More: Wikipedia | NASA | SWRI
On August 21, 2017 (2 years from now):
a total solar eclipse will occur
The moon will block out the sun for parts of the United States. (See full map.) The last time a total solar eclipse was visible from this much of the United States was in 1918.
The eclipse will occur August 21, 2017 at 11:47 AM EST.