EastEnders is on BBC1 at 7.30pm.
While Denise insists that she just wants to be friends, Kush soon makes his romantic feelings clear during a drink at The Albert.
Stargazing Live Australia is on BBC2 at 8.00pm.
For the next three nights, Professor Brian Cox and Dara O’Briain will be on the other side of the world to study the night skies.
Gravity and Me: The Force that Shapes Our Lives is on BBC4 at 9.00pm.
Jim Al-Khalili reveals the science of gravity.
Youth is on Film4 at 9.00pm.
While staying at a Swiss spa hotel with an old friend, a composer, played by Michael Cain, faces requests to reconsider his retirement.
Supergirl and The Flash are on Sky 1 from 8.00 pm.
The two superheroes take part in musical crossover episodes – with guest star Glee’s Darren Criss.
Elementary is on Sky Living at 9.00 pm.
Joan, played by Lucy Liu, works alongside Kitty on a murder case that soon leads to a government conspiracy.