April 25, 2025

TWiS 158: Hubble's 35th Birthday - With "Hubble Hugger" Dr. John Grunsfeld

1 hour 8 minutes

The Hubble Space Telescope has been one of NASA's most successful flagship missions, recently celebrating 35 years in space. Often referred to as "the gift that keeps giving," the HST has provided not just magnificent science—shared worldwide—but also some of our universe's most significant and stunning images, inspiring wonder and driving countless young people into the sciences and STEM fields in general. And for the general public, Hubble continues to provide a profound sense of the wonders of the universe and our place in it. We are joined this week by Dr. John Grunsfeld, who flew five times on the space shuttle and spent over 50 hours on Hubble servicing missions to keep those incredible images coming. Join us for a fascinating deep dive into this magnificent project.

Headlines

NASA Budget Cuts: The episode starts with a discussion about proposed budget cuts to NASA, including concerns from future NASA administrator Jared Isaacman, who expressed reservations about the cuts.

Hercules-Corona-Borealis Great Wall: The hosts discuss the discovery of the largest structure in the universe, the Hercules-Corona-Borealis Great Wall, and the ongoing efforts to understand its size and implications.

China's Tiangong Space Station: An update on China's Tiangong space station and their successful crew rotation operations, as well as their recent agreement to train astronauts from Pakistan.

Interview with Dr. John Grunsfeld

John Grunsfeld's Background: Grunsfeld shares his early inspirations, including the pioneering Gemini program during the Space Race, and how this influenced his path to becoming an astronaut and physicist.

Hubble's 35th Anniversary: The conversation shifts to the Hubble Space Telescope's 35th anniversary and Grunsfeld's unique perspective as someone who flew on the space shuttle and performed multiple Hubble servicing missions.

Hubble Servicing and EVAs: Grunsfeld details the challenges and complexities of performing extravehicular activities (EVAs) to repair and upgrade Hubble, highlighting the extensive training involved.

Hubble's Scientific Contributions: The discussion covers Hubble's significant scientific achievements, including measuring the age and expansion of the universe and the discovery of dark energy.

NASA's Value and Budget Concerns: Grunsfeld emphasizes NASA's importance in driving innovation, inspiring the public, and its positive impact on the economy, expressing concern over proposed budget cuts.

Future of Space Telescopes: The episode concludes with a look at the future of space telescopes, including the Habitable Worlds Observatory and the potential for robotic servicing to maintain these complex instruments.

Hosts: Rod Pyle and Tariq Malik

Guest: Dr. John Grunsfeld

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