How long do planetary nebulae last on average? What are some of the controlling factors? Doug KaupaCouncil Bluffs, Iowa To ...

Many good things come in threes: the Three Musketeers, the Three Tenors, movie and book trilogies, and more. There seems to be something symmetrical, beautiful, and satisfying when using the power of ...

Ninety-nine years have passed since the landmark publication of Edward Emerson Barnard's historic atlas of dark nebulae, ...

NASA, Donald Walter/South Carolina State University/Paul Scowen/ Brian Moore/Arizona State University A glimpse up at the night sky will reveal a seemingly endless landscape of twinkling stars, but ...

When a star runs out of fuel, it sheds its outer layers of gas and, if it doesn't explode in a supernova, forms a glowing shell of ionized gas that expands into space. Shells like these are known as ...

In their dying throes, some stars leave behind beautiful planetary nebulae — disk, spiral or even butterfly-shaped clouds of dust and gas (SN: 5/17/18). How these fantastically shaped clouds arise ...

A way of estimating more accurate distances to the thousands of so-called planetary nebulae dispersed across our galaxy has been announced. The announcement was made by a team of three astronomers ...

Images of two iconic planetary nebulae taken by the Hubble Space Telescope are revealing new information about how they develop their dramatic features. Researchers from Rochester Institute of ...

Emission nebulae are the subject of many of the most spectacular astrophotographs published in the last decade. Although there are many subcategories of nebulae, they all consist of interstellar gas ...

Planetary nebulae are the remnants of stars roughly one-to-eight times the size of the sun surrounded by hot gas lit up by ultraviolet radiation. Kastner hopes that through a comprehensive campaign of ...

Compact, automated and surprisingly capable, this beginner-friendly smart telescope makes capturing galaxies easier than ever ...