Astronomers say they have traced a mysterious pulsing in the Milky Way to a surprising source: a dead star locked in a dance ...
The once-in-a-lifetime phenomenon will be visible to the naked eye, and won't happen again for 80 years. The night sky may temporarily gain a new star soon, thanks to a once-in-a-lifetime event ...
Compass and scale image titled "Cepheid Variable Star V1 in M31 HST WFC3/UVIS." Four boxes each showing a bright white star in the center surrounded by other stars. Each box has a correlating date ...
The Helix Nebula, also called NGC 7293, is a natural wreath surrounding a dying star. This breathtaking image of the Helix Nebula was captured by NASA’s Spitzer Space Telescope. The Helix Nebula is ...