Star with two faces discovered thousands of light years from Earth

With one side composed fully of hydrogen and the other of helium, the star has been dubbed Janus after the two-faced Roman god of transition, and described in a new Nature study.

New celestial images will create a 3D map of the universe

Star with two faces discovered thousands of light years from Earth

A century of astronomy revealed Earth's place in the universe

Astronomers spot record-breaking radio signal that took 8 billion

Star with two faces discovered thousands of light years from Earth

Stars—facts and information

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Stars—facts and information

Colossal gravitational waves—trillions of miles long—found for the

Two-faced star with helium and hydrogen sides baffles astronomers