The sun is the source of energy for life on earth and is the strongest modulator of the human physical environment. In fact, the Sun s influence extends throughout the solar system, both through photons, which provide heat, light, and ionization, and through the continuous outflow of a magnetized, supersonic ionized gas known as the solar wind.
While the accomplishments of the past decade have answered important questions about the physics of the Sun, the interplanetary medium, and the space environments of Earth and other solar system bodies, they have also highlighted other questions,
Recent scientific and technical advances have made it possible to create matter in the laboratory under conditions relevant to astrophysical systems such as supernovae and black holes. These advances will also benefit inertial confinement fusion research and the nation s nuclear weapon s program. The report describes the major research facilities on which such high energy density conditions can be achieved and lists a number of key scientific questions about high energy density physics that can be addressed by this research. Several recommendations are presented that would facilitate the de
Advances made by physicists in understanding matter, space, and time and by astronomers in understanding the universe as a whole have closely intertwined the question being asked about the universe at its two extremes the very large and the very small. This report identifies 11 key questions that have a good chance to be answered in the next decade. It urges that a new research strategy be created that brings to bear the techniques of both astronomy and sub-atomic physics in a cross-disciplinary way to address these questions. The report presents seven recommendations to facilitate the necess
From the casual conversation starter to the 24-hour cable channels and Web sites devoted exclusively to the subject, everyone talks about weather. There's even weather in space and it's causing major upsets to our modern technological world.
Space weather is all around us. There are no nightly news reports on space weather (yet), but we're rapidly developing the tools necessary to measure and observe trends in cosmic meteorology. New probes are going on-line that help us monitor the weather taking place miles above the Earth.
But why does space weather matter? It doesn't affec
The report of the Astronomy and Astrophysics Survey Committee (AASC), Astronomy and Astrophysics in the New Millennium, contains recommendations in priority order for new initiatives to realize the science goals of the field. It is the most recent in a series of surveys that are carried out once every ten years.
In preparing the New Millennium report, the AASC made use of a series of panel reports that address various aspects of ground- and space-based astronomy and astrophy