It’s quite a challenge to make an Earth-like world. You need enough mass to hold an atmosphere and generate a good magnetic ...

What planet is most like Earth? Reseachers have identified several exoplanets similar to our planet, but none that are an ...

One of the most promising Earth-sized exoplanets may be far more barren than its early billing suggested, with new analyses pointing to a rocky world stripped of the protective gases that make a ...

"We reported hints of methane, but the question is, 'is the methane attributable to molecules in the atmosphere of the planet or in the host star?'" When you purchase through links on our site, we may ...

"At this point, we can rule out TRAPPIST-1d from a list of potential Earth twins or cousins." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Scientists have identified a "close cousin" to Earth that's orbiting a sun-like star and might harbor life. The researchers announced their discovery Thursday based on observations from NASA's Kepler ...

Scientists are observing an Earth-like exoplanet that may contain water using NASA's James Webb Space Telescope, the space agency said in a news release. The exoplanet, known as TRAPPIST-1 e, orbits ...