Stars form when gravity pulls together material within giant clouds of gas and dust. But gravity isn't the only force at work. Both turbulence and magnetic fields battle gravity, either by stirring things up or by channeling and restricting gas flows, respectively.
"The Dynamic Sun," a new exhibit conceived, designed and built by researchers at the Harvard-Smithsonian Center for Astrophysics (CfA), has just opened at the Smithsonian National Air and Space Museum (NASM) in Washington, D.C.
Every massive galaxy has a black hole at its center, and the heftier the galaxy, the bigger its black hole. But why are the two related? After all, the black hole is millions of times smaller and less massive than its home galaxy.
Submitted by jshaw-adm on December 6, 2011 - 12:22pm