Lunar samples retrieved by China's Chang'e 5 robotic mission went on display in Macao on Tuesday, marking the first time any lunar samples have been brought to the city for public exhibition.

The samples, contained in a specially built glass case and closely guarded, can be viewed by members of the public at the Macao Science Center until next Saturday.

The appearance of the lunar materials is the major feature of the Science and Technology Serial Activities in Macao, launched on Tuesday to popularize knowledge about China's space, marine and polar explorations.

The events are jointly organized by the Macao Special Administrative Region government, the Liaison Office of the Central People's Government in the Macao SAR and the China National Space Administration.

The 12-day activities include the Second Macao Space Development Forum, a themed exhibition at the Macao Science Center, several space industry seminars and lectures at local schools.

Huang Yong, assistant director of the CNSA's publicity center, said that the Chang'e 5 samples will enable people in Macao, especially youngsters, to closely observe lunar dust. "I am sure this will become an unforgettable experience in their life and will inspire them to learn more about the universe and the motherland's space activities, and also to pursue their own 'science dreams'," he said.

At the opening ceremony of the activities on Tuesday, Li Guoping, chief engineer of the CNSA, said the mainland will continue to share the country's accomplishments in space, marine and polar exploration with Macao residents.

Tai Kin Ip, director of the Economic and Technological Development Bureau of the Macao SAR, said he believes that with support from the Macao government and the space administration, space professionals from both sides will continue to work together to bring about more scientific and technological advances, train more researchers and engage in more international cooperation projects.