Episode Details

### Episode Summary

Real-time images of exploding stars, a surprisingly “gentle” supermassive black hole, the return of a long-duration Soyuz crew, a packed week of launches, Subaru’s first new exoplanet and brown-dwarf finds, and a controversial plan to light up the night sky with orbital mirrors.

### Timestamps & Stories

00:00 – Cold Open

00:35 – Intro

01:05 – **Story 1: Astronomers watch novae explode in real time**

**Key Facts**

- First-ever direct imaging of two novae as they erupted using the CHARA optical interferometer

- V1674 Herculis: fastest nova on record; brightened & faded in days; showed two perpendicular gas jets

- V1405 Cassiopeiae: visible to naked eye for months; delayed ejection after 50+ days

- Gamma-ray bursts from Fermi telescope timed perfectly with visible jets

03:35 – **Story 2: Soyuz MS-27 crew lands after 8-month ISS mission**

**Key Facts**

- Crew of three returned safely to Kazakhstan on 8 Dec 2025

- 260+ days in orbit (launched April 2025)

- Handover completed; ISS now at full Expedition strength for next rotation

05:05 – ** Story 3: Launch Roundup (8–15 Dec 2025) **

**Key Facts**

- SpaceX Starship Flight 6 (Texas) – major reusability test

- China Long March 7A – new Tiangong station module

- ULA Vulcan Centaur Cert-2 (Cape Canaveral) – second certification flight

- Rocket Lab Electron (New Zealand) – successful dawn launch

- Russia Soyuz-2.1b (Vostochny) – classified payload

06:35 – ** Story 4: Subaru Telescope’s first discoveries* *

**Key Facts**

- First science results from upgraded high-contrast infrared instruments

- New brown dwarf (13–80 Jupiter masses) with dusty disk

- New wide-orbit gas-giant exoplanet ~300 light-years away showing methane & water signatures

08:05 – ** Story 5: Sagittarius A* is less destructive than thought **

**Key Facts**

- Objects like G2/DSO, D9, X3, X7 all survive stable orbits within 0.8 parsecs of the 4-million-solar-mass black hole

- 20+ years of VLT data (SINFONI, NACO, ERIS) show no tidal disruption

- Galactic Center may be a star-formation zone rather than a shredder

09:55 – ** Story 6: Giant space mirrors to light up the night **

**Key Facts**

- Reflect Orbital plans thousands of mirror satellites by 2030

- Each beam ~5 km wide, 4× brighter than full moon

- Goal: extend solar-farm output after sunset & aid night rescues

- Astronomers warn of catastrophic light-pollution increase and wildlife disruption

11:20 – Outro

### Sources & Further Reading

1. https://connectsci.au/news/news-parent/7462/Astronomers-watch-stars-explode-in-real-time-and

2. https://www.nasa.gov/blogs/spacestation/2025/12/09/soyuz-crew-lands-ending-eight-month-space-research-journey/ (https://www.nasa.gov/blogs/spacestation/2025/12/09/soyuz-crew-lands-ending-eight-month-space-research-journey/)

3. https://www.nasaspaceflight.com/2025/12/launch-roundup-120825/ (https://www.nasaspaceflight.com/2025/12/launch-roundup-120825/)