Emily Lakdawalla at the Planetary Society gives a preview of major space science missions in the coming year: What’s up in planetary missions in 2014 – The Planetary Society.

She includes a link to thisinteresting  infographic from Olaf Frohn that displays current space science missions:

Credit: Olaf Frohn
What’s Up in the Solar System diagram by Olaf Frohn (updated for January 2014)
A diagram, updated once a month, of active space missions traveling beyond 
Earth orbit. Contains links to past diagrams.