We may finally have an answer to a long-standing cosmic/ cosmetic issue. NASA

Was our two‑faced moon in a small collision?

As of today, we have a cataclysmic new explanation for one of solar system astronomy’s most long-standing questions: why do the near- and far-sides of the Moon look so different? This new theory, published…
The vertical motion of the asteroid (in green) relative to Earth over several years. Paul Wiegert, University of Western Ontario

Earth’s first Trojan found – say hello to our little friend

This morning, the discovery of Earth’s first Trojan companion was announced by a group of Canadian astronomers. The object in question, 2010 TK7, is a lump of rock just a few hundred metres across, and…

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