Joss Bland-Hawthorn
@jossbh.bsky.social
Astrophysicist, Director of the Sydney Institute for Astronomy, University of Sydney.
My boarding school in the heart of the Cotswolds, UK... as a child, it felt very remote.
November 21, 2025 at 11:34 PM
My boarding school in the heart of the Cotswolds, UK... as a child, it felt very remote.
So where is the foreground WLM dwarf galaxy in this JWST composite image?
en.wikipedia.org/wiki/Wolf%E2...
en.wikipedia.org/wiki/Wolf%E2...
November 19, 2025 at 1:51 AM
So where is the foreground WLM dwarf galaxy in this JWST composite image?
en.wikipedia.org/wiki/Wolf%E2...
en.wikipedia.org/wiki/Wolf%E2...
This new stream is the kind of structure you get when a dwarf galaxy on a radial orbit shoots through the centre of the massive galaxy. Simulation from Melinda Weil in 1997:
ui.adsabs.harvard.edu/abs/1997ApJ....
Rubin image:
www.nature.com/articles/d41...
It seems plausible to me...
ui.adsabs.harvard.edu/abs/1997ApJ....
Rubin image:
www.nature.com/articles/d41...
It seems plausible to me...
November 12, 2025 at 12:25 AM
This new stream is the kind of structure you get when a dwarf galaxy on a radial orbit shoots through the centre of the massive galaxy. Simulation from Melinda Weil in 1997:
ui.adsabs.harvard.edu/abs/1997ApJ....
Rubin image:
www.nature.com/articles/d41...
It seems plausible to me...
ui.adsabs.harvard.edu/abs/1997ApJ....
Rubin image:
www.nature.com/articles/d41...
It seems plausible to me...
November 7, 2025 at 9:16 PM
Reposted by Joss Bland-Hawthorn
Gargantuan Gaia review by Michael Perryman
"271 pages, 126 figures, accepted for publication in Physics Reports"
arxiv.org/abs/2509.10883
"271 pages, 126 figures, accepted for publication in Physics Reports"
arxiv.org/abs/2509.10883
September 16, 2025 at 3:46 AM
Gargantuan Gaia review by Michael Perryman
"271 pages, 126 figures, accepted for publication in Physics Reports"
arxiv.org/abs/2509.10883
"271 pages, 126 figures, accepted for publication in Physics Reports"
arxiv.org/abs/2509.10883
Marc Chagall's work is to be found in famous buildings all over the world. He also did the stained glass windows for a tiny church in Kent... (the only one in the world!)
www.theculturium.com/marc-chagall...
www.theculturium.com/marc-chagall...
Marc Chagall: All Saints' Tudeley | The Culturium
All Saints' Tudeley is home to Marc Chagall's stained glass windows, commissioned to commemorate the life of Sarah d'Avigdor-Goldsmid.
www.theculturium.com
September 16, 2025 at 10:20 AM
Marc Chagall's work is to be found in famous buildings all over the world. He also did the stained glass windows for a tiny church in Kent... (the only one in the world!)
www.theculturium.com/marc-chagall...
www.theculturium.com/marc-chagall...
The day I met Dirac, right before he died in 1982. He said no to a photo, but I mentioned how a relative had done his favourite portrait (now hanging at St Johns College, Cam.) "Oh all right, but no fussing, be quick about it!"
August 27, 2025 at 5:33 AM
The day I met Dirac, right before he died in 1982. He said no to a photo, but I mentioned how a relative had done his favourite portrait (now hanging at St Johns College, Cam.) "Oh all right, but no fussing, be quick about it!"
George E. Smith obituary: co-inventor of the charge coupled device, which ushered in an era of digital images:
www.nature.com/articles/d41...
Although not an astronomer, he & Boyle had as much impact on astronomy as any astronomer... and all from one hour of brainstorming.
www.nature.com/articles/d41...
Although not an astronomer, he & Boyle had as much impact on astronomy as any astronomer... and all from one hour of brainstorming.
George E. Smith obituary: co-inventor of the charge coupled device, which ushered in an era of digital images
Smith’s invention enabled the precise capture of light in electronic form, and has transformed science, medicine and daily life.
www.nature.com
August 17, 2025 at 7:12 AM
George E. Smith obituary: co-inventor of the charge coupled device, which ushered in an era of digital images:
www.nature.com/articles/d41...
Although not an astronomer, he & Boyle had as much impact on astronomy as any astronomer... and all from one hour of brainstorming.
www.nature.com/articles/d41...
Although not an astronomer, he & Boyle had as much impact on astronomy as any astronomer... and all from one hour of brainstorming.