How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

The James Webb Space Telescope has observed two large planets at different stages of infancy - one with an atmosphere brimming with dusty clouds and the other encircled by a disk of material - ...

Terrestrial planets like Earth have a natural thermostat called carbonate-silicate (Cb-Si) weathering feedback. The Cb-Si feedback is a geochemical cycle that regulates a planet's atmospheric CO 2 ...

Published: February 17, 2025 11:29am EST When Earth first formed, it was too hot to retain ice. This means all the water on our planet must have originated from extraterrestrial sources.

"In terrestrial planets, metallic cores can host dynamos, as in Earth today. However, liquid silicates (molten rocks, basically) are also electrically conductive at extreme pressures and temperatures.

In PDS 70, for example, it could be that these terrestrial planets lose some of the water that is readily available to them—relying on asteroids to later replenish it.

The complete freezing limit decreases from that for aqua planets (92% S0, where S0 is Earth's present insolation) to that for land planets (77% S0) with an increasing dry area.

Back to Article List Nearest young Earth-sized planet could shed light on how terrestrial worlds evolve At just 400 million years old, HD 63433 d is a teenaged world circling a Sun-like star.

The researchers propose that if a terrestrial planet has substantially less carbon dioxide in its atmosphere compared to other planets in the same system, it could be a sign of liquid water -- and ...

Such a search would work best for “peas-in-a-pod” systems, in which multiple terrestrial planets, all about the same size, orbit relatively close to each other, similar to our own solar system.