237: Why does an asteroid hit the Earth? And why so big?

A question from Laura, age 12. Professor Catherine Neish answers. For more on Prof. Neish, listen to episode 192. Also check out her podcast with John Moores, Popcorn Science.

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.

A question from Lyla, age 5. Dr. Federica Spoto answers. For more on Dr. Spoto's work, see episode 190.

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.

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. Janiver's work, see episode 121.  

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 light pollution, see these resources from Dark Sky International.

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.

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, see the mission website.

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 instructions here.

A question from Renny, age 4. Dr. Jessie Christensen answers. For more on Dr. Christensen's work, see episodes 42 and 102.