Paramount+ is offering a discount for two-month subscription to its science fiction franchises, "Star Trek" and "Halo," offering a wide range of science documentaries. The deal includes a price tag of $2.99 per month for two months, a saving of $6 per month from Essential (the ad-supported tier) and $11 per month Premium (no ads and 4K streaming) until March 31. Science documentaries on Paramount+ include "Space Voyages," "Secrets of Our Universe," "Wonders of the Moon with Dara Ó Briain," and "Shuttle Discovery's Last Mission," which chronicles the history of NASA's most iconic craft. The discount applies to both the Essential and Premium tiers.