Answer: Giant cloud of dust and gas in space
Notes: NASA recently shared an amazing image of the Red Spider Nebula, exciting space fans. A nebula is a large cloud of dust and gas in space, where new stars can form or where gas and dust from dying stars collect. Nebulae, often called "star nurseries," consist mainly of hydrogen and helium. Gravity causes clumps of dust and gas in a nebula to come together, eventually collapsing to form a hot core that becomes a new star. Nebulae are found in interstellar space, with the closest known one being the Helix Nebula, about 700 light-years from Earth. Nebulae vary in shape and size and include types like planetary nebulas, supernova remnants, and emission nebulae.
