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Comets probably didn’t deliver life’s building blocks to Earth

Science News reports that simulated comet impacts rarely let hydrogen cyanide, a prebiotic molecule, reach Earth’s surface intact.

14 Sources, 1d ago, updated 1d ago

Comets probably didn't seed life on Earth after all, new study suggests

Science

First atomic-scale confirmation of 2D d-wave altermagnetism in KV₂Se₂O

Researchers used helical edge modes of a topological insulator as a spin-selective STM probe to map spin patterns in KV₂Se₂O at atomic resolution. They observed checkerboard antiferromagnetic order and d-wave spin splitting, confirming altermagnetism—a magnetic state blending ferromagnet and antiferromagnet traits.

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2 Sources, 20d ago, updated 20d ago

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Comets probably didn’t deliver life’s building blocks to Earth

First atomic-scale confirmation of 2D d-wave altermagnetism in KV₂Se₂O

Featured in

Comets probably didn’t deliver life’s building blocks to Earth

First atomic-scale confirmation of 2D d-wave altermagnetism in KV₂Se₂O