# The 5 Deadliest Places in the Universe

- Page: https://pxreality.com/videos/the-5-deadliest-places-in-the
- Watch on YouTube: https://www.youtube.com/watch?v=kk44DVSNcCE
- Published: 2026-10-24
- Channel: PXReality (https://www.youtube.com/@PXReality)

## Summary

It's Halloween, so Dr. PX counts down the five deadliest places in the universe, with a ghost danger meter to keep score.

## Chapters

- 0:00 A planet where it rains glass (https://www.youtube.com/watch?v=kk44DVSNcCE&t=0s)
- 0:53 #5 Io, the volcano moon (https://www.youtube.com/watch?v=kk44DVSNcCE&t=53s)
- 3:33 #4 The glass storm planet (https://www.youtube.com/watch?v=kk44DVSNcCE&t=213s)
- 6:07 #3 The Boomerang Nebula (https://www.youtube.com/watch?v=kk44DVSNcCE&t=367s)
- 8:29 #2 A magnetar (https://www.youtube.com/watch?v=kk44DVSNcCE&t=509s)
- 10:48 #1 The edge of a black hole (https://www.youtube.com/watch?v=kk44DVSNcCE&t=648s)
- 13:02 The list (https://www.youtube.com/watch?v=kk44DVSNcCE&t=782s)

## Sources

- Io: hundreds of volcanoes, the most volcanic world in the solar system, sulfur colours, Jupiter's intense radiation, about 1 ton of Io stripped away every second: NASA Science (Io facts)
- Io's lava may be hotter than any on Earth today (up to about 2,000 K): NASA/JPL, Galileo (1998)
- Tvashtar volcano plume about 290 km high: NASA New Horizons, PIA09248 (2007)
- HD 189733 b: deep blue from silicate (glass) particles, possibly glass rain sideways in winds of about 7,000 km/h, over 1,000 °C, about 64 light years away: NASA/Hubble (2013); ESA/Hubble heic1312
- Hydrogen sulfide (rotten egg gas) on HD 189733 b: Fu et al., Nature 632 (2024), James Webb Space Telescope; University of Maryland (2024)
- Boomerang Nebula: about 1 kelvin (-272 °C), colder than the Big Bang's afterglow, about 5,000 light years away, looks more like a bow tie: ESA/Hubble heic0301; NASA JPL, "Ghostly specter haunts the coldest place in the universe" (2013)
- Neutron stars: about 20 km wide, a teaspoon would weigh about a billion tons: NASA (NICER)
- Magnetars: magnetic field about a thousand trillion times Earth's: NASA Imagine the Universe (1998); "stripping information from a credit card at a distance halfway to the Moon": Harvard-Smithsonian Center for Astrophysics (2005)
- SGR 1806-20 giant flare, Dec 27, 2004: in a tenth of a second, more energy than the Sun gives off in 150,000 years; it disturbed Earth's ionosphere: NASA Swift (2005); CfA (2005). Distance about 28,000 to 30,000 light years: Bibby et al. (2008)
- Io found by Galileo, January 1610; its volcanoes discovered in Voyager 1 images by JPL engineer Linda Morabito, March 1979 (NASA/JPL PIA00379); flybys by Voyager, Galileo, New Horizons and Juno (NASA)
- HD 189733 b found in 2005 at Haute-Provence Observatory (Bouchy et al.); its star dims about 2.4% during each transit; colour from Hubble STIS (Evans et al., 2013); too faint and too close to its star to photograph (ESA)
- Boomerang Nebula named in 1980 (Taylor and Scarrott); temperature measured 1995 with the SEST telescope in Chile (Sahai and Nyman, 1997); ALMA confirmation 2013
- SGR 1806-20: first bursts January 7, 1979; proven a magnetar in 1998 by timing its 7.5 second spin (Kouveliotou et al., Nature); the 2004 flare seen by more than 20 satellites and echoed off the Moon (ESA INTEGRAL)
- Stars around Sagittarius A*: decades of tracking by the teams of Reinhard Genzel and Andrea Ghez, star S2's 16 year orbit (ESO; Nobel Prize in Physics 2020); 8 telescopes in the 2017 Event Horizon Telescope array; nearest known black hole Gaia BH1, about 1,560 light years (W. M. Keck Observatory, 2022)
- Travel time at Voyager 1's speed (about 17 km/s): about 1.1 million years to HD 189733 b (our arithmetic from NASA's figures)
- Black holes: nothing escapes the event horizon, not even light; spaghettification near small black holes: NASA (2024)
- Sagittarius A*: about 27,000 light years away, about 4 million times the Sun's mass, image "about the same size in the sky as a doughnut on the Moon": ESO / Event Horizon Telescope (2022)

## Credits

Real images: Galileo's 1610 notes (public domain scan, University of Oklahoma Libraries); Io from Voyager 1 (NASA/JPL, PIA00379); Io from Juno (NASA/JPL-Caltech/SwRI/MSSS, image processing Gerald Eichstädt / Thomas Thomopoulos, CC BY); Hubble (NASA) and James Webb Space Telescope (NASA/Chris Gunn) photos; Boomerang Nebula ALMA + Hubble view (NRAO/AUI/NSF/NASA/STScI/JPL-Caltech, CC BY 4.0); SGR 1806-20's star cluster in infrared (Hubble data, image by Lithopsian, CC BY-SA 4.0); stars at the centre of our galaxy and S2's orbit (ESO/MPE, ESO/MPE/GRAVITY, CC BY 4.0); Event Horizon Telescope map (ESO/M. Kornmesser, CC BY 4.0); Io, NASA/JPL/University of Arizona (Galileo, PIA02308); Io's plume, NASA/Johns Hopkins APL/SwRI (New Horizons, PIA09248); Boomerang Nebula, ESA/Hubble & NASA (CC BY 4.0); Sagittarius A*, EHT Collaboration (CC BY 4.0, via ESO). Illustrations: HD 189733 b, NASA, ESA, M. Kornmesser (CC BY 4.0); magnetar flare, NASA's Goddard Space Flight Center/Chris Smith (USRA/GESTAR). Painted backgrounds: illustrations made for this video with AI image tools (Google Flow), not real photos. Music: YouTube Audio Library. Sound effects: original. Narration: AI-generated voice.