Light Echoes and Clues to Protoplanetary Disks

Here’s an interesting read that gives a little insight on how scientists are measuring the distance between protoplanetary disks (planet nurseries) and their host stars. This type of info will help build our knowledge base concerning exoplanets and, perhaps, uncovering an earth-like exoplanet?  The more you know….

Light Echoes and Protoplanetary Disks

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