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the exploded star with the matter around it, we see shock waves rushing into interstellar space at millions of miles per hour, and, as a real bonus, we see for the first time...
outward - get more elbow room - as they bump into each other. That makes the hot fluid less dense than the cold fluid, and the cold fluid slides under, pushing the hot fluid...
, gravitational waves, and particle astrophysics. Awards may be for up to four years’ duration (up to five years for suborbital investigations), but shorter-term proposals...
, gravitational waves, and particle astrophysics. Awards may be for up to four years’ duration (up to five years for suborbital investigations), but shorter-term proposals...
The Astrophysics Research and Analysis Program (APRA, D.3) solicits basic research proposals for investigations that are relevant to NASA's programs in astronomy and...
not present. The F layer is like a mirror for radio waves with frequencies below about 20 MHz. Shortwave transmissions from earth hit the F layer and bounce back down. In...
electromagnetic spectrum. THE SUN'S CORONA The Sun is the dominant source for visible-light waves our eyes receive. The outer-most layer of the Sun's atmosphere,...
Interferometer Space Antenna (LISA) to tell us more about the gravitational waves produced by such astronomical phenomena. LISA will consist of three spacecraft flying in a...
detection and investigation of the so-called B-mode polarization pattern on the Cosmic Microwave Background (CMB) impressed by gravitational waves during those initial...
as cataclysmic supernovae. Atoms more massive than Fe form in supernova blast waves (accounting for useful substances like plutonium and uranium). The debris from supernovae...