Each of the planets, labeled b, c, d, and e, has a mass between 20% and 30% of Earth's, making them among the smallest yet detected using the radial velocity method.

Work from the DiSCo program (Discovering the Composition of Trans-Neptunian Objects) has uncovered the existence of three ...

Astronomers have discovered two new exoplanets that are similar to other worlds found in the Milky Way, but unlike any in our ...

NASA’s James Webb Telescope captured direct images of gas giants in HR 8799, revealing their carbon dioxide-rich atmospheres.

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 discover a super-Earth and a sub-Neptune 250 light years away from our solar system. These planets offer a ...

The findings provide strong evidence that four giant exoplanets 130 light-years from Earth formed much like Jupiter and ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Overall, the study showed that our solar system fits reasonably well into the team’s peas-in-a-pod category. Some peas-in-a-pod systems also have outer planets like our solar system. Deciding on ...

The two exoplanets, or planets outside of our solar system, orbit a star called TOI ... meaning that for every three orbits of the inner planet, the outer planet completes almost exactly two.