Researchers using the Hubble Space Telescope have discovered water vapor in the atmosphere of planet K2-18b, located about ...

The curious minds at What If explore what it would mean for life on Earth if every planet in our solar system were habitable.

Exoplanets—planets that orbit stars beyond our solar system—have transformed our understanding of the universe. Since the ...

Stars don’t just form planets—they may also re-supply their disks with gas, reshaping how and where planets emerge.

On May 12, weather-station equipment on NASA's Curiosity rover (pictured 2021) recorded a high temperature of 11 degrees ...

Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system, although they ...

Smithsonian researchers trekked to a remote site in northern Canada to collect four-billion-year-old rock samples that could ...

NASA researchers have discovered evidence of tectonic activity on Venus by re-examining decades-old radar data. The findings ...

Beneath Mars’ barren crust, scientists may have found a hidden oasis—liquid water, deep below, waiting to reshape our view of ...

What if billions of years ago, the Red Planet had rain, snow, and even rivers that carved out landscapes much like those we ...

It suggests that Venus may be more geologically active than previously believed and may help scientists understand why Earth became a habitable planet and Venus did not. Decades-old radar data ...

Of the more than 5,000 exoplanets that have been confirmed so far and many more thousands of candidates, most orbit stars the ...