Icy Exocomets Around a Distant Star Help Explain Earth's Water
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Icy Exocomets Around a Distant Star Help Explain Earth's Water

Did icy comets deliver water to the young Earth? That idea won't go away. Now, astronomers at Lund University in Sweden have found evidence of exocomets orbiting a young star named PDS 70. The observations suggest that these comets are delivering water to that system's inner regions.