Country Always

Caring for Country

A Corner of the Empire

The Garden Palace

The Holding Pen

The Agricultural Hall

Regional Networks

Across New South Wales

A Museum of Doing

Technological Museum

Expanding Stories

Evolution of the Castle Hill site from botanical research station to Museum Discovery Centre

Transforming the Tramsheds

Powerhouse Stage 1 and the Harwood Building

A Symbol in Time

Sydney Observatory

Ongoing Transformations

Powerhouse Ultimo

Applied Arts and Sciences

Defining the terms in the 21st century

Powerhouse Renewal

A transformative renewal program across four sites

Sky Guide September 2024

Sydney Observatory's monthly guide to the southern sky

We Rise

Blak Powerhouse

Powerhouse-1 Mission Launch to the ISS

An initiative of the Powerhouse: Future Space program

2024

Exoskeleton

Powerhouse Parramatta

Powerhouse Parramatta Topping Out

Major construction milestone achieved for the new museum

2024

Stories

Sky Guide September 2024

Sydney Observatory's monthly guide to the southern sky

With Geoffrey Wyatt and Dr Andrew Jacob

‘On 18 September the Full Moon will occur when the Moon is just a little closer to Earth than usual. As a result, it will be a little bigger and a little brighter in a phenomenon now called a supermoon. To enjoy it, make sure you find somewhere with a clear view to the eastern horizon, sit, wait and watch the stunning moonrise. Check below for times across Australia. And it you miss it this month, don’t worry there will be another supermoon next month on 17 October.’

Geoffrey Wyatt, education program producer and astronomer

Moon Phases

New Moon Tuesday 3 September 11:55 am AEST

First quarter Wednesday 11 September 4:05 pm AEST

Full Moon Wednesday 18 September 12:34 pm AEST*

Last quarter Wednesday 25 September 4:50 am AEST

Supermoon 18 September

The Moon has an oval, or elliptical, path varying in distance from Earth. At its closest to Earth, it is at perigee; at its farthest it is at apogee. When the full Moon is almost at perigee, it appears a little larger than usual. This has recently become known as a supermoon. Here, we define a supermoon as when the full Moon is within 24 hours of perigee. There are two supermoons in 2024, one on 18 September and one on 17 October. Thanks to a psychological effect called the Moon illusion, a moonrise during a full Moon appears larger near the horizon.