[Image: Deep Impact probe comet collision. (epolitics.com)
Brown University researchers have produced new evidence that lunar swirls — wispy bright regions scattered on the Moon's surface — were created by several comet collisions over the last 100 million years. (sciencedaily.com)
Jupiter may have seeded early Earth with icy materials, and later shielded us from devastating comet collisions, yet Jupiter itself is largely a cipher. (scientificamerican.com)