British actor Sir John Hurt, renowned for memorable roles in everything from I, Claudius to Alien to The Elephant Man to 1984 to Doctor Who, dies at the age of 77 after a long battle with pancreatic cancer (during which he kept actively working). Known to genre fans for the role of unlucky astronaut Kane in Ridley Scott’s Alien (1979), though before this he had lent his voice to animated adaptations of Lord Of The Rings and Watership Down. He spoofed his Alien character for Mel Brooks’ Spaceballs in 1987. Other genre fare included the movie adaptation of Carl Sagan’s novel Contact in 1997, V For Vendetta, Indiana Jones And The Kingdom Of The Crystal Skull, the final two Harry Potter movies, and voiced the dragon in the BBC’s TV series Merlin. In 2013, he joined the pantheon of incarnations of the Doctor for Doctor Who’s 50th anniversary, playing a previously unseen incarnation of the Time Lord, a role he reprised for Big Finish Productions’ Doctor Who audio plays.
The CW airs the 26th episode of Legends Of Tomorrow, starring Arthur Darvill, Brandon Routh, Caity Lotz and Victor Garber. John Barrowman (Torchwood) and NEal McDonough guest star.
The CW airs the 57th episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin. 
The 103rd episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW. Lexa Doig (Andromeda) guest stars.
The 11th and 12th episodes of the science fiction series The Expanse, based on the series of novels by James S.A. Corey (a pseudonym for writers Ty Franck and Daniel Abraham), is broadcast on cable channel Syfy. Hugh Dillon (Flashpoint, The Killing) guest stars in the second season premiere.
Actor Richard Hatch, who starred in the 1970s series 
Though it has yet to actually go to space, the Sierra Nevada Dream Chaser spacecraft is floated as a possible savior for the Hubble Space Telescope, with a very preliminary mission proposal for a repair mission to the telescope which has now been operational in orbit for over a quarter of a century. The possible mission is brought forth as an example of increasing high-profile cooperation between NASA and private space companies. The Dream Chaser’s earliest orbit test flights are not expected to take place prior to 2019; if the mission takes place in 2020 at the earliest, Hubble will by then be 30 years old.
Cable channel Disney XD airs the 
NASA announces the discovery, via the Spitzer Space Telescope, of a system of seven Earth-sized worlds orbiting the star TRAPPIST-1, only 40 light years from Earth’s solar system. Though water may exist in some state on all seven of the planets, three of them are thought to be orbiting within the “Goldilocks zone” in which liquid water would be abundant, making life possible on the surfaces of those planets.
Cable channel Disney XD airs the 
The documentary film 
Actor Bill Paxton, who played both starring and supporting roles in movies such as Aliens, The Terminator, Predator 2, Weird Science, Apollo 13, Twister, and Tombstone, dies at the age of 61. Paxton worked behind the scenes in the early years of his career, alternating between working for legendary B-movie director Roger Corman, and playing small roles on screen. He directed the film clip for the Barnes & Barnes song “Fish Heads” (which was co-written and performed by Bill Mumy). Paxton died from complications that arose during heart surgery.
Private aerospace company SpaceX announces that a crew of two – not publicly identified by the company – have booked a private circumlunar flight scheduled to take place in 2018 aboard a SpaceX Dragon v2 capsule. The flight will utilize a free-return trajectory to the moon, around its dark side, and back to Earth, without orbiting or landing. At the time of the announcement, Dragon v2 has yet to fly into space, either with or without a crew, and the booster that would be required for this flight, the Falcon Heavy, has yet to be test-flown, either with or without a crew.
Cable channel Disney XD airs the 
After a long process of gaining sufficient approval to be budgeted for a design phase, NASA’s Europa Clipper spacecraft gets a name and a preliminary shape, but no completion date or launch window any more specific than “the 2020s”, likely putting it at Jupiter’s intriguing moon Europa in the early 2030s after a series of gravity assists. Europa Clipper is intended to closely survey Europa from orbit, attempting to focus on its icy surface and the saltwater ocean believed to be hidden beneath that surface.