The famous London Planetarium (once an attraction in its own right, now just a minor addon to the Madame Tussaud's 'experience'), now renamed 'Auditorium', is to lose its space show and become a "voyage around the worlds of fame and celebrity", according to an Independent article. Astronomers, including Sir Patrick Moore, have expressed outrage.
I sympathise with the astronomers from a nostalgic perspective, but I can see how the planetarium doesn't fit with the waxworks any more. Whilst waxworks museums and planetariums were once both 'curiosity' type attractions, Madame Tussauds has now become synonymous with 'celebrity'. Their focus over the last decade has been to provide 'interactive experiences' by animating their waxworks and having them respond to you. This doesn't tally well with a passive space show, even when it's been reduced to 15 minutes (down from the original 45 minute show).
Madame Tussauds is also infamously most popular with foreign tourist visitors to London, and so I imagine the more visual experience of the waxworks translates better than the space show, particularly as some of the figures who have waxwork models are famous worldwide.
It will be a shame, though, that the world's most famous planetorium (at least according to Google currently) will no longer feature planets. Let's not get too nostalgic though - Madame Tussauds and the Planetarium haven't been local attractions for years (Londoners tend to mock people who go for paying the high entry price, having to queue, and being surrounded by tourists). Let's look forward to the opening of the planetorium at the National Maritime Museum in Greenwich instead - it is a real museum, not a theme park, after all...