Posts by

Paul Scott Anderson

Active volcanoes on Mars? Noxious gas discovery says — maybe

Are there still active volcanoes on Mars? New detections of hydrogen chloride from below the surface suggest flowing magma.

Paul Scott Anderson

November 6, 2026

Did comets seed life on Earth? A new study says — probably not

Did comets seed life on Earth? It's unlikely, a new study from the University of Cambridge says. It would have been a very rare occurrence.

Paul Scott Anderson

November 1, 2026

Do black holes split into smaller black holes?

Black holes sometimes merge. But could 1 split into 2 or more? A new study explores the conditions that might allow it, including extremely rapid rotation.

Paul Scott Anderson

November 1, 2026

Did the Viking 2 lander detect marsquakes in 1976?

New analysis shows that 2 possible marsquakes detected by Viking 2 were in the same region as nearly 1,000 others detected by the InSight lander decades later.

Paul Scott Anderson

November 1, 2026

Origins of Uranus and Neptune are surprisingly different

A new study suggests that the origins of Uranus and Neptune are quite different, even though the 2 planets are similar in many ways.

Paul Scott Anderson

October 28, 2026

Space

Habitable worlds: Better than Earth? Scientists wonder

Some scientists think there are more habitable worlds than Earth out there. What are they like? And how might we find them?

Paul Scott Anderson

October 27, 2026

Pentagon UAP files part 7: Silent black triangles

The 7th batch of the Pentagon UAP files was released on October 23, 2026. The documents include reports of more triangle craft and more.

Paul Scott Anderson

October 25, 2026

Lucy mission to Trojan asteroids: 5 years of discoveries

NASA’s Lucy mission is now less than a year from reaching the Trojan asteroids near Jupiter. And it has already made some exciting discoveries along the way.

Paul Scott Anderson

October 22, 2026

Surprising colors of white dwarf stars revealed for 1st time

Astronomers in the U.K. have found that the true colors of white dwarf stars can vary greatly. They even found the 1st known green star.

Paul Scott Anderson

October 21, 2026

Caves on the moon are target of new NASA mission

NASA is searching for caves on the moon. A new mission, GIMLI, will land near the volcanic Marius Hills Pit to look for a subsurface lava tube. Will it find one?

Paul Scott Anderson

October 16, 2026

1 / 105

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.