However, the term nebula still refers to a cloud ... Diffuse nebulas are one stage in the circle of life in the Universe. They are areas of cosmic gas and dust that cause stars to be born.

A planetary nebula like this one forms when a dying star ... As the jet, a stream of gas and dust, wobbled (or precessed), it outlined a circle that created the rings around the Cat’s Eye.

To better understand Jupiter’s primordial stages, researchers turned to the tiniest of the planet’s 92 known moons. Almathea and Thebe respectively circle Jupiter at slightly tilted orbits roughly 112 ...

Despite being a "dark nebula," the Circinus West molecular cloud ... tendril of the Circinus West molecular cloud, named the Cir-MMS region. At the heart of the Cir-MMS region is a large cavity ...

Gone are the days when the Ring Nebula looked sort of like a bagel, or a jelly doughnut, a massive astronomical blob holding the secrets of a dying star. The new images of the famous Ring Nebula ...