the form of short notes, papers, and references and links to other available relevant information. IPS RADIO AND SPACE SERVICES IPS Radio and Space Services is the Australian Space Weather Agency, providing advice to customers in the Australasian area on the near-space environment, and the effects it has on communications, navigation, satellite operations, and other technological systems. IPS maintains a network of stations in the Australasian, Antarctic and Pacific areas to monitor the state of the upper atmosphere, the ionosphere and magnetosphere, and the Sun, which directly or indirectly has the greatest influence on our near space environment. Space weather has been defined as the application of space environmental studies to the interactions that occur between the space environment and the activities of humankind. In this definition, it is not only a phenomenon, but the appreciation and effects that phenomenon has on our lives. An alternative definition might be: "Space weather is the state of the space environment, the appreciation of that environment, and the effects that environment has on our activities and ourselves." While the Sun is the primary source of space weather, it is not the only source. An example of an extrasolar source of space weather is the natural space debris field (meteoroids) in which the Earth is continually immersed. This is not constant, but varies with diurnal, annual and longer cycles. This flux produces meteors (ionised trails in the mesosphere) when the meteoroids are trapped by the Earth's gravitational field, and ablate (burn up) in the