Scientists may have identified a molecule that played a key role in robbing Venus of its water and turned this planet into the arid, hellish world we see today. Venus is often called "Earth's twin" ...

The Science of Siblings is a series exploring the ways our siblings can influence us, from our money and our mental health all the way down to our very molecules. We’ll be sharing these stories over ...

WASHINGTON, Dec 2 (Reuters) - Earth is an ocean world, with water covering about 71% of its surface. Venus, our closest planetary neighbor, is sometimes called Earth's twin based on their similar size ...

Astronomers have discovered a planet between the sizes of Earth and Venus only 40 light-years away. Using observations by NASA's TESS (Transiting Exoplanet Survey Satellite) and many other facilities, ...

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Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere.... Venus and Earth used to look like 'twin' planets.