Mar. 17, 2025 — The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away ...

Astronomers have discovered more than 300 exoplanetary systems that have three or more known planets. Most of these planets are about the same size and spaced close together, earning them the ...

They focused on planets between a radius of 1.8 and 10 times the size of Earth ... around young stars," Fernandes said. "The more solar systems and planets we discover, the more we realize that our ...

The two exoplanets, or planets outside of our solar system, orbit a star called TOI-1453, which is slightly cooler and ...

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Young, close-orbiting exoplanets known as sub-Neptunes may form farther from their stars and migrate inward or lose their ...

Astronomers discover a super-Earth and a sub-Neptune 250 light years away from our solar system. These planets offer a glimpse into planetary types missing from our own solar system but common in the ...

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system ...

Most of these planets are about the same size and spaced close together, earning them the moniker "peas in a pod." They also orbit near their stars, in many cases closer than Mercury is to the Sun.