Spacepod

Dr. Solange Ramirez returns to the show to talk about her new position as Project Manager of the Sloan Digital Sky Survey V. Amount other things, the project will study over six million stars and how black holes change over time. These millions of measurements will be made using a robotic telescope system that is currently being built.

Rob Seaman of the Catalina Sky Survey talks about time, and why you need to know the time to discover asteroids and comets. He explains how he installed a highly accurate clock, and makes the case that "natural time" is better than "cold, heartless atomic time."

Dr. Dave Tholen talks about near-Earth asteroids. He explains why they can be difficult to observe, and how he manages to spot them anyway. He also tells the story of a particularly famous asteroid that he discovered, and sets the record straight about its name.

The James Webb Space Telescope hasn't launched yet, but scientists already have plans to use it. Dr. Kartaltepe talks about how she'll use it to study galaxies. She's interested in the first galaxies that ever formed, as well as galaxies at a wide range of distances from Earth.

Urey Prize winner Dr. Francesca DeMeo stops by the show to talk about her asteroid research. She explains what a differentiated asteroid is, and tells us about her asteroid classification system. She also shares a new result, and explains how it may change the way we think about solar system formation.

Dr. Matthew Payne talks about his exoplanet research, which involves looking for periodic dimming in stars. We discuss the Kepler and TESS space telescopes, and he explains why he's so interested in measuring the masses of exoplanets.

Dr. Joanna Carey talks about her research on our home planet, Earth. She explains how the climate change we're experiencing is ten times faster than any in geologic history. We also discuss why small changes in carbon emissions today will make a huge difference to the future climate, and things everyday people can do to mitigate the damage.

Dr. Alejandro Soto returns to the show to talk about how lakes on Titan and on Earth influence the nearby atmosphere. He talks about how lakes create breezes that allow for sailing on Earth, and how the situation changes on Titan.

Dr. Matt Holman, head of the Minor Planet Center in Cambridge, Massachusetts, stops by to talk asteroids. The Minor Planet Center handles about a hundred thousand asteroid observations a night, from observatories all around the world. He talks about the difficulties in linking asteroid observations, and the discovery of the first interstellar asteroid, 'Oumuamua.

Dr. Luisa Rebull returns to the show to describe new research with the Kepler space telescope. Her ingenious study takes advantage of Kepler's strengths, and has produced results that stump theorists. Dr. Rebull explains why this data has given her "a whole new appreciation for post office workers."