Hello everyone, I am the assistant of Australian Encyclopedia. Recently, some friends asked me aboutAustralian flagMany people are curious about what historical codes and cultural symbols are hidden in this blue flag with white stars. Some even ask: "Why do the flags of Australia and New Zealand look so similar?" Today, I will take you to explore this flag flying in the sky of the southern hemisphere and uncover its complete story from its design to cultural identity.
---
### 1. The visual code of the Australian flag
The Australian flag is dark blue with the Union Jack in the upper left corner, five white seven-pointed stars of the Southern Cross on the right, and a larger seven-pointed star below - the Commonwealth Star. This design is no accident:
1. The blue background symbolizes the ocean surrounding Australia and represents the inheritance of British traditions;
2. The Union Jack records the history of being a British colony from 1788 to 1901;
3. The Southern Cross is not only a navigational landmark in the night sky of the Southern Hemisphere, but also a unique symbol of Australia’s geographical location;
4. The original six corners of the Commonwealth Star represented the six states, and in 1977 a seventh corner was added to symbolize the Northern Territory and the Australian Capital Territory.

---
### 2. A century of evolution: from design competition to legal confirmation
When the federation was established in 1901, the government held the world's first national flag design competition and received 32,823 submissions from 32 countries. The winning design actually included two versions:
| Version| Differences| Usage scenarios |
|-----------|----------------------|------------------|
| Blue Version | Dark Blue Background | Civilian and Government Agencies |
| Red Version | Red Background (Merchant Flag) | Navy and Merchant Ships |
The blue flag did not officially become a national symbol until the National Flag Act of 1954. Interestingly, the original federal star had only six points, and it was not until 1977 that it was changed to a seven-pointed star due to territorial changes.
---
### 3. Cultural controversy: a battle for identity over a flag
Although the national flag design is full of profound meaning, there is still debate about whether to change the national flag:
1. **Indigenous groups** believe that the existing design ignores 40,000 years of indigenous culture and prefer to use the **Aboriginal flag** with black, red and yellow colors;
2. **Republicans** advocate removing the Union Jack element to highlight national independence;
3. In the **flag referendum** initiated by the public in 2016, the new proposal proposed by the designer that integrated Aboriginal art with the Southern Cross received 45% support.

---
### 4. Practical Guide: Little-known facts about the use of national flags
Under the Flag Agreement, Australians are free to fly the national flag, but must follow certain rules:
- 🚫 Do not let the flag touch the ground
- 🌙 Lighting is required for nighttime suspension
- 🇦🇺 When placed side by side with a foreign flag, the size of the flag must not be smaller than the other flag
- 📅 Important days for hanging include: National Day on January 26, Anzac Day on April 25
---
Five questions about the Australian flag answered
#### Q1: Why are the five stars of the Southern Cross different sizes?
The smallest is a five-pointed star (Epsilon Crucis), and the other four are seven-pointed stars. This difference is due to astronomical observations - the actual brightness of the stars in the constellation is different, and the designer uses the number of star angles to distinguish the apparent star level.
#### Q2: Can the Union Jack on the national flag be replaced with other elements?
Currently, the law does not allow unauthorized modification, but allows individuals or organizations to make artistic adjustments when designing derivative products (such as T-shirts and souvenirs).
#### Q3: Why is the Australian naval flag red?
The red version is derived from the British merchant ship tradition, and all government ships used the red ensign before 1953. It is now only reserved for registered merchant ships, and the navy has switched to a white flag.
#### Q4: On what occasions must the flag be flown at half-mast?
In addition to routine days of mourning, all government buildings must fly flags at half-mast when an active military member dies in the line of duty, a major disaster occurs, or a national leader passes away.
#### Q5: How to distinguish the national flags of Australia and New Zealand?
The Southern Cross on the New Zealand flag has four red five-pointed stars and no Commonwealth star, while Australia's has five white seven-pointed stars.
---
### Summary
From the blue star flag that won the design competition in 1901 to the national symbol that carries the controversy of multiculturalism today, the Australian flag is not only a geographical symbol, but also a microcosm of the historical process. Every time it flies, it tells the story of the interweaving of colonial history and modern identity, and the dialogue between European tradition and Aboriginal culture. As friends living in Australia, understanding the deep meaning behind this flag may help us understand the past and future of this country more deeply.
Thank you for your reading. I hope this article can help you understandAustralian flagIf you are interested in Australian cultural symbols, immigration policies or life guides, please follow our series of topics on "Interpretation of Australian Symbols".
> 📌 Further reading:
> - The Evolution of Australia's National Anthem: From "God Save the Queen" to "Advance Australia"
> - "Understanding the Australian state flags in one article: the mystery of kangaroos, black swans and crowns"