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Paul Scott Anderson

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As seen in: AmericaSpace, EarthSky, The New York Times, BMJ Open, SAGE Publishing, The Conversation, VICE, Biomed Central (BMC), Flipboard, The Minnesota Star Tribune, Miami Herald, LSE Connect and
🇨🇦 space writer, editorial and social media assistant - EarthSky (@earthskyscience) | blogger - Fermi Paradoxica | views are my own | ND | he/him
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Articles

How do lava-world exoplanets keep their atmospheres?

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By Paul Scott Anderson Verified
| EarthSky
Space Artist’s concept from NASA. Lava-world exoplanets like this one might be expected to be airless. But some have air. How? Lava worlds are rocky exoplanets that orbit so close to their stars that intense heat can melt rock on their surfaces. Scientists had expected that they would lose their atmospheres due to the intense radiation from their stars. But it turns out some lava-worlds do have atmospheres, even thick ones! How is that possible?
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Meet a Saturn-sized exoplanet with Earth-like temperatures Original

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By Paul Scott Anderson Verified
| EarthSky
Space Artist’s concept of a gas giant exoplanet orbiting its star. A new study from PennState University shows that one such world, the Saturn-sized exoplanet TOI-199b, has near-earthly temperatures and a methane atmosphere. Image via NASA/ JPL-Caltech/ PennState. TOI-199b is a Saturn-sized exoplanet 330 light-years from Earth. Unlike most gas giants, its temperature isn’t far from Earth’s. New Webb observations revealed this world’s atmosphere contains methane.
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Huge rift valleys on Venus hint at a still-living planet Original

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By Paul Scott Anderson Verified
| EarthSky
Space View larger/full image. | Some of the huge rift valleys on Venus as seen by NASA’s Magellan spacecraft. NASA released this radar image on June 4, 1998. It is color-coded to show different elevations. Image via NASA/ JPL/ USGS/ ETH Zurich. EarthSky isn’t powered by billionaires. We’re powered by you. Support EarthSky’s 2026 Donation Campaign and help keep science accessible. Is Venus dead geologically? Or is it still active? New evidence from ETH Zurich suggests that Venus is still active.
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