Every star you see at night broadcasts its temperature through color, yet one shade sits permanently off the menu. The visible spectrum runs from deep red through orange, yellow, white, and blue, each ...

One of the pleasures of stargazing is noticing and enjoying the various colors that stars display in dark skies. Even as you observe these stellar colors, do you notice that they're recognizable only ...

Professional and amateur astronomers post amazing photos of the sky. A colorful, star-filled Milky Way is often shown rising above a landscape, and photos from the Hubble Space Telescope reveal ...

Some rare galaxies, like NGC 5972 shown here, exhibit a green glow thanks to the presence of doubly ionized oxygen. This requires UV light from stellar temperatures of 50,000 K and above. Oxygen is ...

Blue stars are by far the biggest and brightest stars in the galaxy. To the naked eye, the stars in the night sky all look very similar to each other, the main difference between them being that some ...

Close out your week with a soothing view of the wonders of space, as provided by the Hubble Space Telescope. This week’s image from Hubble shows an enormous structure of stars called a globular ...

One of the pleasures of stargazing is noticing and enjoying the various colors that stars display in dark skies. Star colors are always interesting to observe, since they add so much to the character ...