Steve Eales
@steveeales.bsky.social
Astronomer at Cardiff University, interested in the origin and evolution of galaxies - also writes articles and books about astronomy and astronomers
Glad to see a mention of my new book, the Ghost in the Telescope, in a BBC article (www.bbc.co.uk/news/article...). Isaac Roberts took the first picture of Andromeda in the visible waveband 120 years before we took the first picture in the submillimetre waveband.
The Denbigh builder who photographed galaxies
Isaac Roberts, a farmer's son from Denbigh, shocked the world with his intergalactic photos.
www.bbc.co.uk
September 16, 2025 at 8:04 AM
Glad to see a mention of my new book, the Ghost in the Telescope, in a BBC article (www.bbc.co.uk/news/article...). Isaac Roberts took the first picture of Andromeda in the visible waveband 120 years before we took the first picture in the submillimetre waveband.
After seven years, very happy to see my book about Herschel (the telescope) finally published. I did describe the big discoveries made with the telescope, but what I really wanted to was capture the crazy stories behind the discoveries. This is not the sanitised version of astromy. #popularastronomy
September 2, 2025 at 9:30 AM
After seven years, very happy to see my book about Herschel (the telescope) finally published. I did describe the big discoveries made with the telescope, but what I really wanted to was capture the crazy stories behind the discoveries. This is not the sanitised version of astromy. #popularastronomy
bsky.app/profile/roya...
Looking forward to the meeting about the Euclid early results next Friday. Also be good to meet some of the Euclid folk in person, since so much of this vast collaboration is done on Zoom, email and Slack
Looking forward to the meeting about the Euclid early results next Friday. Also be good to meet some of the Euclid folk in person, since so much of this vast collaboration is done on Zoom, email and Slack
We've got a busy day next Friday!
First up, there will be Specialist Discussion Meetings on the early science from Euclid and how geophysicists are tackling challenges with food production in the UK.
But that's not all!
⤵️
First up, there will be Specialist Discussion Meetings on the early science from Euclid and how geophysicists are tackling challenges with food production in the UK.
But that's not all!
⤵️
May 4, 2025 at 6:28 AM
bsky.app/profile/roya...
Looking forward to the meeting about the Euclid early results next Friday. Also be good to meet some of the Euclid folk in person, since so much of this vast collaboration is done on Zoom, email and Slack
Looking forward to the meeting about the Euclid early results next Friday. Also be good to meet some of the Euclid folk in person, since so much of this vast collaboration is done on Zoom, email and Slack
Reposted by Steve Eales
If you're into your science podcasts, check out BBC R4 Inside Science this week, as the lovely @apontzen.bsky.social,
@amsterdammed.bsky.social and I have a nice long geeky chat about the new dark energy results from @desisurvey.bsky.social 🤓
📻: www.bbc.co.uk/sounds/play/...
#cosmology 🔭
@amsterdammed.bsky.social and I have a nice long geeky chat about the new dark energy results from @desisurvey.bsky.social 🤓
📻: www.bbc.co.uk/sounds/play/...
#cosmology 🔭
Congrats to @desisurvey.bsky.social - it's looking more & more like dark energy isn't Einstein's cosmological constant! If you've woken up to the news & are searching for the publications, they don't appear to be on arxiv 🤷♀️ but they are online. 🔭 #cosmology 🧪
ℹ️: data.desi.lbl.gov/public/paper...
ℹ️: data.desi.lbl.gov/public/paper...
![A graph of the evolution of the dark energy (vertical axis) as a function of time (redshift on the horizontal axis) - showing an offset from the cosmological constant (a flat horizontal line). Here is the figure caption from the paper:
FIG. 12. Comparison of the constraints on the equation of
state of dark energy using the CPL parametrization and a bin-
ning reconstruction approach, using DESI+CMB+DESY5.
The solid green line shows the best-fit w(z) based on w0 and
wa inference and the green contours around it represent the
68% and 95% confidence intervals. We also show in blue the
constraints from the binning approach [47], with the hori-
zontal bars indicating the bin width (which is fixed) and the
vertical bars representing the 1σ error. Additionally, we in-
clude in gray the 1D posterior for each binning parameter.
The ΛCDM limit corresponds to the horizontal gray dashed
line.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:ok3ms3dzop7gcwejp7lswhpi/bafkreiaa64kyfu7u5ber7u6kwk2zzkuet66j6o3l4lr5ftl5sef67pzham@jpeg)
March 27, 2025 at 6:10 PM
If you're into your science podcasts, check out BBC R4 Inside Science this week, as the lovely @apontzen.bsky.social,
@amsterdammed.bsky.social and I have a nice long geeky chat about the new dark energy results from @desisurvey.bsky.social 🤓
📻: www.bbc.co.uk/sounds/play/...
#cosmology 🔭
@amsterdammed.bsky.social and I have a nice long geeky chat about the new dark energy results from @desisurvey.bsky.social 🤓
📻: www.bbc.co.uk/sounds/play/...
#cosmology 🔭
Reposted by Steve Eales
While the headline takeaway from the ACT results yesterday was "LCDM is fine", the headline from DESI is quite different - evidence for evolving dark energy, at up to 4.2 sigma, and over 3 sigma even without any supernovae, which persists with many different combinations of datasets. 🧪🔭
March 19, 2025 at 10:15 PM
While the headline takeaway from the ACT results yesterday was "LCDM is fine", the headline from DESI is quite different - evidence for evolving dark energy, at up to 4.2 sigma, and over 3 sigma even without any supernovae, which persists with many different combinations of datasets. 🧪🔭
Reposted by Steve Eales
First images from the Square Kilometre Array Low Frequency (SKA-Low)!
Taken with only 1,024 of the planned 131,072 antennas, and it's already looking good :)
#RadioAstronomy
Taken with only 1,024 of the planned 131,072 antennas, and it's already looking good :)
#RadioAstronomy
March 18, 2025 at 5:52 AM
First images from the Square Kilometre Array Low Frequency (SKA-Low)!
Taken with only 1,024 of the planned 131,072 antennas, and it's already looking good :)
#RadioAstronomy
Taken with only 1,024 of the planned 131,072 antennas, and it's already looking good :)
#RadioAstronomy
Reposted by Steve Eales
Our qualitative study with natural scientists on ultimate reality has been published. We look at the influence of religious background and disciplinary field, as well as inspiration from humanities. Care for the planet an enduring concern. Read it open access here! Thank you to participants
The restaurant at the beginning of the universe: Natural scientists on ultimate reality, science, and religion | Religious Studies | Cambridge Core
The restaurant at the beginning of the universe: Natural scientists on ultimate reality, science, and religion
www.cambridge.org
March 7, 2025 at 3:27 PM
Our qualitative study with natural scientists on ultimate reality has been published. We look at the influence of religious background and disciplinary field, as well as inspiration from humanities. Care for the planet an enduring concern. Read it open access here! Thank you to participants
Beautiful Hubble image of Andromeda. We have made a nice submillimetre image of the dust but it isn’t as pretty as this
February 25, 2025 at 7:19 AM
Beautiful Hubble image of Andromeda. We have made a nice submillimetre image of the dust but it isn’t as pretty as this
Evolving intelligent life took billions of years − but it may not have been as unlikely as many scientists predicted
theconversation.com/evolving-int...
theconversation.com/evolving-int...
Evolving intelligent life took billions of years − but it may not have been as unlikely as many scientists predicted
Humans evolved late in Earth history. While this timing inspired the conclusion that humanlike life is a cosmic improbability, a new study pushes back.
theconversation.com
February 17, 2025 at 6:39 AM