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Chinese scientists claim to have found a new way of injecting helium into rocket engines, which could be used to make missiles that are much harder to detect or intercept. The new technology was allegedly inspired by the faulty spacecraft that "stranded" NASA astronauts on the ISS last year.

Archaeologists have brought to light an enormous fresco depicting a secretive cult practice in Pompeii.

A stunning "parade of planets" will grace the night sky this week, with all seven of Earth's celestial neighbors joining the show. Here's how to spot it and why it happens.

A new study has revealed that "hug of death" megaraptorids and previously unknown carcharodontosaurs shared Australia's unique Antarctic dinosaur ecosystem during the Cretaceous.

A rare parasitic twin protruding from the chest of a 17-year-old boy has been removed by surgeons in Delhi, India.

In world-first observations, the James Webb Space Telescope is watching two distant alien planets "spilling their guts into space" as they rapidly disintegrate — and scientists are elated at what they've found.

Cancer vaccines harness the power of the immune system to stop tumors in their tracks. They work a little differently than regular vaccines intended to prevent infectious diseases, like measles or the flu.

A teen girl with abdominal pain learned she was pregnant and had conceived under extremely unusual circumstances.

Why did Hatshepsut have her husband buried to the west of the Valley of the Kings, while she was buried in the valley itself?

A yet-unidentified illness has killed 53 people and potentially infected hundreds more in the Democratic Republic of the Congo. The World Health Organization is investigating the outbreak.

China's Zhurong rover has found evidence of an ancient shoreline buried deep beneath the planet. That could point to an ocean, a beach, and to life.