Astronomers posed over the past decade that dark comets, or objects that resemble asteroids but move like comets, may exist.

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The European Space Agency’s (ESA) Mars Express orbiter captured stunning views of a winter wonderland on Mars, but this isn’t ...

Scientists have discovered seven more "dark comets," and analysis of this haul suggests that the puzzling planetoids are divided into two distinct families, further deepening the mystery of why these ...

Australe Scopuli showcases Mars' icy layers and dust jets formed by seasonal sublimation. Stunning fan patterns highlight ...