Oct 6

Ep. 766: How Spacecraft End

Astronomy Cast Ep. 766: How Spacecraft End By Fraser Cain & Dr. Pamela Gay End-of-Life Planning for Your Spacecraft! Streamed live October 1, 2025. Your spacecraft has reached the end of its mission. You’ve done everything you can to keep it operational, but now it’s time to say ... Show More

30m 28s

Sep 29

Ep. 765: Rockets vs The Environment

Astronomy Cast Ep. 765: Rockets vs The Environment By Fraser Cain & Dr. Pamela Gay Streamed live on Sep 22, 2025. We don’t launch a lot of rockets every year, so their impact on the environment is minimal compared to other forms of transportation. But that number is steadily incr ... Show More

35m 18s

Sep 15

Ep. 763: Interstellar Comets

Astronomy Cast Ep. 763: Interstellar Comets By Fraser Cain & Dr. Pamela Gay Streamed live Sep 8, 2025. Welcome to the first episode of our 19th season! This week we look at objects coming from other solar systems that come passing on by our Sun. During the summer hiatus the 3rd i ... Show More

30m 11s

Sep 23

What Webb Is Teaching Us About Our Solar System

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

27m 32s

Aug 4

Why Webb's Earliest Galaxies Are Blowing Scientists' Minds

With the James Webb Space Telescope, we are seeing the early universe like never before. Webb produces beautiful images and detailed scientific data that leave astronomers in awe. In this episode, Mic Bagley, a NASA scientist on the Webb team, guides us through new discoveries ma ... Show More

27m 54s

Dec 2021

40 - How Will JWST Change Astronomy?

Today we dive into the world's shiny new space telescope - JWST. Learn why are physicists and astronomers are so excited about it, and what new secrets of the universe it might reveal. Keep your eye out for its launch later this week!Support the show

19m 52s

Jul 2024

#431: Ancient Universe Revealed by Webb & Space Junk Hits Home

Space Nuts Episode 431: James Webb Discoveries, Space Junk, and Ocean WorldsJoin Andrew Dunkley and Professor Fred Watson in this exciting episode of Space Nuts, where they explore the latest in space science and astronomy. Episode Highlights:- James Webb Space Telescope Discover ... Show More

32m 34s

Sep 3

Webb's Exoplanet Research Sounds Like Sci-Fi—But It's Real

Some exoplanets—like a gas giant with rain made of glass and 5,000-mile-per-hour winds—sound like worlds dreamed up by a science fiction writer. But they’re real. From light-years away, scientists can uncover details about planets orbiting distant stars and even ask whether some ... Show More

23m 43s

Jan 2025

Webb Telescope Confirms Hubble Tension, Vesta's Liquid Mysteries, and Mars' Explosive New Year: S28E01

SpaceTime Series 28 Episode 01 Webb Telescope Confirms Hubble Tension The James Webb Space Telescope has confirmed the Hubble Tension, challenging the current understanding of cosmic theory. New observations reveal that the Universe is expanding faster now than during its early y ... Show More

32m 45s

Nov 2023

Deep Sky: A JWST IMAX experience

Deep Sky, a newly released IMAX documentary, tells the emotional and hopeful story of the James Webb Space Telescope (JWST). Nathaniel Kahn, an Oscar-nominated filmmaker and the director of Deep Sky, joins Planetary Radio this week to discuss the film's decade-long creation proce ... Show More

55m 39s

Mar 2023

62 - JWST and the Earliest Galaxies in the Universe (ft. Mike Boylan-Kolchin)

Astronomers' newest telescope, JWST, just discovered galaxies that formed earlier than previously thought possible. What does this discovery mean for our understanding of the early universe?To support our show and get ad-free episodes and other exclusives, join us for $3 a month ... Show More

24m 1s

Ep. 729: The James Webb Space Telescope