Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

QSO1. It lived just 700 million years after the Big Bang and already had a mass about 50 million times that of the Sun.

The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

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Astronomers have identified Cloud 9, a nearby dark matter halo filled with gas but no stars. The discovery supports key predictions about how galaxies form and why some never do.

JWST has identified nine distant, compact galaxies that do not fit existing categories, raising new questions about how galaxies formed in the early Universe.

Cloud-9 entered the picture in 2023, when astronomers using the Five-hundred-meter Aperture Spherical Telescope (FAST) in ...

After combing through NASA's James Webb Space Telescope's archive of sweeping extragalactic cosmic fields, a small team of ...

NASA’s Hubble has examined Cloud-9, a strange object with no stars that offers clues about early galaxy formation and dark ...

Both NASA’s James Webb Space Telescope and Chandra X-ray Observatory caught these two galaxies in a close embrace.

Astronomers have captured the most detailed look yet at faraway galaxies at the peak of their youth, an active time when the adolescent galaxies were fervently producing new stars.

A team of astronomers looking at Hubble telescope data have discovered, for the first time, the remnants of a failed galaxy ...