Those are the questions scientists are asking themselves as they pore over new close-up images of Mars that show ancient sedimentary rock formations on the planet's surface. The rock formations ...

The Perseverance rover has captured new images that appear to reveal geologic ... Now, the rover has climbed on top of the fan to explore the sedimentary rock that may preserve evidence of past ...

These are sedimentary rock layers chronicling Earth's geological history. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by ...

Sedimentary rocks from South Africa which the team sampled for this study. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by ...

New images of the surface of Mars have revealed numerous layered outcrops similar to sedimentary rocks on Earth, strongly suggesting that liquid water was present on Mars at an early stage in its ...

In photos: NASA's Perseverance rover mission ... which hosted a lake and a river delta billions of years ago. And sedimentary rocks, which form through the deposition of dirt and sand over time ...

There are three main rock types: igneous, sedimentary and metamorphic. These rocks are made of minerals that all have ...

Back-scattered electron images of all the thin sections of pelitic rocks and chemical compositions of minerals were obtained with an electron probe microanalyzer (JEOL-JXA-8800) at The University ...