A newly found super-Earth could help provide answers as to why there are hardly any planets twice the diameter of Earth.

New research is reshaping how scientists understand the earliest days of Earth’s formation—suggesting that the deep interior ...

Venus, the hottest planet in the solar system, is estimated to have 85,000 volcanoes, based on radar images from NASA's 1989 ...

Astronomers discovered that these stars get stuck “playing the same part of their tune” once their turbulent outer layer ...

which is surrounded by a swirling layer of liquid metal. Findings point to structural shifts in the iron sphere that raise ...

A new species of fossil from 444 million years ago that has perfectly preserved insides has been affectionately named "Sue" ...

Venus may be far more geologically alive than anyone expected. New research suggests its outer crust could be churning with ...

A super-Earth that could explain the ... heat from a planet's formation that seeps out from its interior and into its thick gaseous layer, heating it so that it can escape more easily.

A 444-million-year-old fossil named "Sue" preserves internal organs of Keurbos susanae, raising questions about arthropod ...

Others maintain they formed by plate tectonic processes similar to modern Earth, where rocks collide and push each other over ...