Stars Reveal Hidden Galaxy

New evidence points to the evolution of the ability for bacteria to grab nitrogen from the atmosphere some 3.2 billion years ago, about 1.2 billion years earlier than thought—with implications for finding extraterrestrial life. Lee Billings reports 

NASA has to deal with the unexpected financial consequences of robotic missions that just keep going. Lee Billings reports 

The oldest group of terrestrial worlds now known formed some 11.2 billion years ago, more than six billion years before our sun and planets. Clara Moskowitz reports 

NASA’s James Webb Space Telescope is hard at work answering our biggest questions about the birth of our universe and faraway galaxies. But some astronomers are pointing its powerful eyes much closer to home. In this episode, Caltech astronomer Katherine de Kleer explains how Web ... Show More

NASA is an exploration agency, and one of our missions is to know our home. In the 1960s, NASA astronauts orbiting the Moon captured a revelatory view of Earth. Today, NASA explores our home planet with a fleet of dozens of spacecraft. In this episode–the first in a miniseries al ... Show More

<p dir="ltr">Sarah Al-Ahmed, the host of Planetary Radio, marks her 100th episode with a look back at the defining moments of the past 100 weeks of space exploration. We'll revisit previous Planetary Radio interviews, including the launch of ESA's Juice mission to the icy moons o ... Show More

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<p>This week on Planetary Radio, we explore the decades-long journey of Kosmos 482, a Soviet-era Venus probe that spent 53 years orbiting Earth before its dramatic return on May 10, 2025. Ben Fernando, a postdoctoral researcher in seismology and planetary science at Johns Hopkins ... Show More