The air conditioning malfunction has been fixed and is open again for business.
"So visit the most advanced digital Planetarium on the African continent this weekend and experience unparalleled animation and 360-degrees cinema – where virtual voyages of the universe are made possible," says Iziko.
"Every day, the Iziko Planetarium and Digital Dome screens a series of shows for explorers both young and bold!"
Iziko Museums of South Africa has confirmed that the planetarium is closed due to a "malfunction with the air conditioner".
They are expecting to have it open again by lunchtime on Friday.
Iziko Museums of South Africa has announced its Cape Town Planetarium, including the Digital Dome, is closed until further notice.
The museum apologised to visitors but did not disclose the reason why or what the forward arrangements would be for those who have existing bookings, as yet. Traveller24 is awaiting a more detailed response.
The Dome underwent an extensive revamp in 2017, with state-of-the-art technology added to its facilities - offering perspective-3D edu-tainment for visitors about the universe.
READ: Astrophotography tips to capture the Milky Way at its best, from anywhere in South Africa
Iziko Museums of South Africa does have a collection of other museums in Cape Town as an alternative - with each housing a different and fascinating exhibit. From heritage museums such as Groot Constantia Manor House and Bo-Kaap Museum, to the Slave Lodge and Maritime Centre, the museums cover a range of fields.
Prices to enter and opening times vary for each museum or exhibition space, click here for all the details.
The South African Astronomical Observatory
Those interested in finding out more about our incredible solar system and galaxy can also visit The South African Astronomical Observatory (SAAO), based in Observatory on the site of the former Royal Observatory.
The historic building is recognised as a National Heritage Site and offers regular SAAO Open Nights, on the second and fourth Saturday of every month at 20:00 - with the next one taking place on 11 January.
All Open Nights include a presentation on topics of astronomy or physics, and an introduction to the historic McClean telescope, the observatory museum, and the library. If the weather is clear, there will be a chance for stargazing using the McClean and other telescopes set up for the night.
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