Dr. Stephen Kane from the University of California, Riverside and colleagues offer a tidy explanation for one of the Solar System’s enduring puzzles: why Venus, so similar to Earth in size and mass, has no moon at all.

The post New Study Explains Why Venus Has No Moon appeared first on Sci.News: Breaking Science News.

The Solar System’s smallest planet has contracted by nearly 19 km (12 miles) across, as crater debris masked telltale wrinkles on its surface, according to new research led by the German Aerospace Center’s Institute of Space Research.

The post Mercury Has Shrunk Even More than Planetary Scientists Thought appeared first on Sci.News: Breaking Science News.

For the first time, astronomers combined Hubble and Webb space telescopes to hunt down some of the smallest, faintest objects ever spotted in the outer Solar System.

The post Hubble and Webb Team Up to Spy Tiny Frozen Worlds beyond Neptune appeared first on Sci.News: Breaking Science News.

The main-belt asteroid Donaldjohanson, a heavily cratered fragment born from a catastrophic breakup 155 million years ago, appears to wobble through space while preserving clues to the migration of water-rich worlds in the early Solar System, according to a new analysis of images and data from NASA’s Lucy spacecraft.

The post Asteroid Donaldjohanson is Wobbly, Peanut-Shaped Object with Watery Past, Scientists Say appeared first on Sci.News: Breaking Science News.

Planetary scientists analyzing a lunar meteorite known as Northwest Africa (NWA) 12593 have uncovered evidence of an asteroid impact that occurred 3.5 billion years ago on the Moon, helping to reconstruct a period of intense bombardment that left lasting marks across the inner Solar System.

The post Lunar Meteorite Preserves Evidence of Colossal Asteroid Strike appeared first on Sci.News: Breaking Science News.

The Northwest Africa (NWA) 12774, an angrite meteorite discovered in the Sahara Desert, likely in Mauritania, appears to be a fragment of a vanished protoplanet, offering the strongest evidence yet that a large planetary body formed and was later destroyed during the Solar System’s chaotic infancy.

The post Meteorite Found in Africa Preserves Evidence of Long-Lost Massive Protoplanet appeared first on Sci.News: Breaking Science News.