Posts by

Paul Scott Anderson

SETI looks to Milky Way’s heart for alien signals

A new SETI collaboration is searching for repeating artificial radio signals from alien civilizations in the heart of our Milky Way galaxy.

Paul Scott Anderson

June 6, 2023

Super-Earth and mini-Neptune in synchronized dance

Astronomers say they've discovered a super-Earth and mini-Neptune exoplanet system where the orbits of the 2 worlds are synchronized in a cosmic dance.

Paul Scott Anderson

June 2, 2023

Searching for habitable exoplanets in the soot zone

Astronomers say that habitable exoplanets could form in the soot zone around young stars. They could be rich in volatile carbon compounds, different from Earth.

Paul Scott Anderson

May 31, 2023

News from Enceladus via Webb: A huge water plume!

NASA's Webb Space Telescope has observed the largest water plume on Enceladus ever seen. Details about the analysis results will be published in a new paper.

Paul Scott Anderson

May 30, 2023

Ancient ocean on Mars? Chinese rover finds marine sediments

Scientists in China say that the Zhurong rover has found new evidence for an ancient ocean on Mars, sedimentary rocks formed in a shallow marine environment.

Paul Scott Anderson

May 30, 2023

Weird comet in asteroid belt targeted by Webb

The Webb telescope has observed Comet Read, a weird comet in the main asteroid belt. Among the findings ... water vapor, yes. But carbon dioxide, no.

Paul Scott Anderson

May 24, 2023

Distant volcano-covered world is the size of Earth

Astronomers say they have discovered an Earth-sized exoplanet 90 light-years away that may be a volcano-covered world, possibly as active as Jupiter's moon Io.

Paul Scott Anderson

May 21, 2023

Evidence for ancient river on Mars in new rover images

NASA's Perseverance rover has spotted new signs of an ancient river on Mars, deeper and faster than any seen before. Curving layers of rocks provide the clues.

Paul Scott Anderson

May 19, 2023

Saturn’s rings much younger than Saturn itself

How old are Saturn's rings? A new study suggests they're only about 400 million years old at most, much younger than Saturn itself. Dust provided new clues.

Paul Scott Anderson

May 17, 2023

Moon’s inner core is solid, like Earth’s, scientists say

Researchers in France say that the moon's inner core is solid, with a density close to that of iron, solving a long-standing debate about the heart of the moon.

Paul Scott Anderson

May 11, 2023

Paul Scott Anderson

Paul Scott Anderson has had a passion for space exploration that began when he was a child when he watched Carl Sagan’s Cosmos. He studied English, writing, art and computer/publication design in high school and college. He later started his blog The Meridiani Journal in 2005, which was later renamed Planetaria. He also later started the blog Fermi Paradoxica, about the search for life elsewhere in the universe. While interested in all aspects of space exploration, his primary passion is planetary science and SETI. In 2011, he started writing about space on a freelance basis with Universe Today. He has also written for SpaceFlight Insider and AmericaSpace and has also been published in The Mars Quarterly. He also did some supplementary writing for the iOS app Exoplanet. He has been writing for EarthSky since 2018, and also assists with proofing and social media.