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Universe
Oct 31, 2018

observable stochastic background of gravitational waves that impresses a faint polarized signature on the CMB. The National Research Council’s decadal survey recommended...

Earth
Jun 15, 1999

lightning structure within a storm. One method is to use multiple receivers to measure differences in the arrival times of the radio impulses. Zen Kawasaki of Osaka...

Universe
Oct 21, 1998

brilliant star that was not in previous images. This was dubbed SN1998bw. At such close range, GRB980425 could only have about 1 percent of 1 percent (0.0001) of the raw...

Apr 20, 1999

wavelengths and high energies. Telescopes rely on the interaction between energy and matter. The atomic matter that forms the telescope has to somehow interpret the energy...

Sun
Mar 11, 2008

and their interaction with Earth and other planets, as well as with the interstellar medium. Investigations of the physics of magnetospheres, including fundamental...

Earth, Sun
Aug 19, 2008

seismic waves from earthquakes to probe inside Earth. In this way, mission scientists hope to map the ebb and flow of the sun's inner magnetic dynamo, the root of all solar...

Universe, Sun
Dec 21, 1998

that's not all -- they also reflect radio waves. During a shower like the Leonids, radio signals from TV stations, RADAR facilities, and AM/FM transmitters are constantly...

Universe, Solar System
Jun 28, 1999

. The luminous ionized trails are not only visually striking -- they also reflect radio waves. During a major meteor shower, radio signals from TV stations, RADAR facilities...

Sun
Jan 18, 2002

helioseismology, which can probe conditions within the Sun much like seismic waves reveal the interior structure of our planet, announced that currents of gas at the base of...

Aug 5, 2022

. Activities include Earth System in a Bottle and We're All Connected: Earth System Interactions. Visualize waves with an interactive tool that allows students to control...

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