A nebula from Latin: "cloud"is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a name for any diffuse astronomical object, including galaxies beyond the Milky Way.
Researchers are attempting to create an Earth-size virtual instrument called the Event Horizon Telescope; a worldwide network of radio telescopes powerful enough to snap a picture of the supermassive black hole at the heart of our Milky Way galaxy.
Alfa One day we all end up Among the Stars, even the planets and suns everything else, we are all going somewhere for some reason, and I I don't think it's to become better Destroyers the cosmos does that well enough already
Other than a handful of deep sky objects (galaxies, nebulas, star clusters) that can be seen w/ the naked eye, this statement is basically correct. The stars we can see do generally fit inside that circle.
GREAT Visual of the Electromagnetic Spectrum. While light and other electromagnetic waves do not require a medium and can travel through a vacuum, they can travel through some media, such as clear glass.