The photos reveal a bright and well-developed coma, the cloud of gas and dust surrounding the comet's nucleus, with striking ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our understanding of how planets take shape — not only in our solar system, but ...

The comet was discovered on July 1 by the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope. Knowing ...

The star is surrounded by a protoplanetary disk, and this disk is the first evidence of debris condensing into what will ...

In the dark, icy outskirts of our solar system—far beyond Neptune's orbit—astronomers have discovered a cosmic oddball that ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar ...

Astronomers have, for the first time, observed the very beginning of planet formation around a star beyond our Solar System.

Plasma waves are a critical element to understanding the many mysteries of the gas giant’s turbulent, magnetically powerful ...

Most comets, including the well-known Halley's, loop through our solar system like cosmic time capsules that formed alongside ...

For the first time in history, scientists have caught a glimpse of a brand-new solar system just as it begins to form around ...

In a cosmic first, astronomers have spotted the earliest signs of rocky planet formation around a young star. The discovery ...