This NASA/ESA Hubble Space Telescope image features a sparkling spiral galaxy paired with a prominent star, both in the ...

This NASA/ESA Hubble Space Telescope Picture of the Week features a sparkling spiral galaxy paired with a prominent star, ...

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For over a century, astronomers have marveled at the beauty and complexity of spiral galaxies, which feature arms covered in ...

The Canadian-built Atacama Cosmology Telescope in the high Chilean desert mountains, which has just given up its final batch ...

New data further challenge the best scientific theory of the history and the structure of the universe. But a separate recent ...

Hubble Telescope finds more questions than answers ... For example, perhaps supernova explosions shape the feathers from spiral arms, carving into the gas like a sculpture. Or perhaps weak-but ...

The Atacama Cosmology Telescope in the high Chilean desert mountains ... It’s about how fast the universe is expanding, known as the Hubble constant. One way to measure this is by looking ...

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.