238: When will the universe stop expanding?
A question from Jacob, age 7. Dr. Andrés Plazas Malagón answers. For more on Dr. Malagón's work, see episode 208 or listen to his podcast, Visión Cósmica.
1 Sep 16min
237: Why does an asteroid hit the Earth? And why so big?
A question from Lyla, age 5. Dr. Federica Spoto answers. For more on Dr. Spoto's work, see episode 190.
1 Aug 13min
236: Are there rainbows on other planets? (Part II)
We try, a second time, to answer a question from Maeve, who is almost 3 years old. Dr. Matthew Kenworthy answers. For more on rainbows on other planets, see episode 232.
1 Juli 15min
235: Why is the sun hot?
A question from Ida, age 4. Miho Janvier answers. Find out more about the Solar Dynamics Observatory, the Solar and Heliospheric Observatory (SOHO), Solar Orbiter, and Proba-3. For more on Dr. Jani...
1 Juni 9min
234: How many stars are there in space?
A question from Kellan, age 6. Professor Kim McLeod answers. To learn more about Wellesley College's Whitin Observatory, including public visit nights, go here. For more on what you can do to reduce l...
1 Maj 9min
232: Are there rainbows on other planets?
A question from Maeve, who is almost 3 years old. Dr. Alejandro Soto answers. For more on Dr. Soto's work, see episodes 44 and 136.
1 Apr 10min
232: How many potholes are on an asteroid?
A question from Issac, age 5. Dr. Nancy Chabot answers. For more on Dr. Chabot's work, see episodes 7 and 152. For more on the Planetary Defense, see this NASA website. For more on the DART mission,...
2 Mars 5min
231: How big is space?
A question from Issac, age 4. Dr. Jeff Rich answers. For more on Dr. Rich's work, see episodes 14, 81, 118, or 159, or visit the Carnegie Observatories website. Find the pocket solar system instru...
1 Feb 9min
