NASA’s Juno spacecraft has reshaped key ideas about Jupiter. Data collected during the probe’s polar orbits reveal a planet with jet streams plunging thousands of kilometers deep, a lopsided magnetic ...

In the early months of 2026, skywatchers around the world will have a rare chance to see six planets lined up in the morning ...

Who’s ready for a “planet parade”? The last planetary alignment was in August 2025, when six planets aligned and four were bright enough to be seen without a telescope. Next week, Mercury, Venus, ...

Astronomers have long debated why so many icy objects in the outer solar system look like snowmen. Michigan State University ...

Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

In a conventional system like our own, rocky planets such as Mercury, Venus, Earth, and Mars orbit closest to the host star. Farther out, gas giants ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges ...

Predicted to reach perihelion again in 2028, it will give astronomers a chance to get additional insights.

Detection of hydrogen sulfide in four HR 8799 gas giants provides evidence of solid accretion, clarifying how massive exoplanets form and distinguishing them from brown dwarfs ...

An inside-out planetary system around the star LHS 1903 is turning everything that astronomers know about planet formation upside down.