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A cloud of gas and dust in space.
A cloud of gas and dust in space. The term originally referred to objects that appeared fuzzier than stars – although astronomers subsequently identified many of these as galaxies. What we now call nebulae are formed in several ways: from the remains of exploding stars, the remnants of smaller stars that simply fade away, or from a mass of interstellar gas that pulls itself together under its own gravity.
What we now call nebulae are formed in several ways: from the remains of exploding stars, the remnants of smaller stars that simply fade away, or from a mass of interstellar gas that pulls itself together under its own gravity.