A previously unknown kind of variable star is on brilliant display 7,000 light-years from Earth in a new photo taken by a telescope in the Southern Hemisphere. For years scientists have known that ...

Polaris, a Cepheid variable star, is the brightest member of a triple-star system and serves as a crucial navigation aid. The research team, led by Nancy Evans from the Center for Astrophysics ...

In this historical photo from the U.S. space agency ... and Harold Turner — conduct tests on airfoils in the Variable Density Tunnel. (In 1985, the Variable Density Tunnel was declared a ...

A previously unknown kind of variable star is on brilliant display 7,000 light-years from Earth in a new photo taken by a telescope in the Southern Hemisphere. For years scientists have known that ...

A previously unknown kind of variable star is on brilliant display 7,000 light-years from Earth in a new photo taken by a telescope in the Southern Hemisphere. For years scientists have known that ...