Create accountLogin

Recent searches

No recent searches

Search options

Only available when logged in.
historians.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
Historians.social is open to all who are interested in history.

Administered by:

Server stats:

234
active users

historians.social: AboutProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.3.4

#Astrodon

41 posts37 participants9 posts today
Public
ESO

Where are we with the construction of our Extremely Large Telescope (ELT)?
This video takes you on a drone flight over the site in #Chile. We recommend full screen and volume up!

➡️ youtube.com/watch?v=t3GJbCasyO

To account for some delays, we've updated the ELT schedule, which now has the following main milestones 👇

🗓️ Telescope first light (first test observations) expected in March 2029
🗓️ Instruments installed and commissioned over the course of 2029 and 2030
🗓️ Scientific first light (first observations with scientific instruments) expected in December 2030

Read more: eso.org/public/announcements/a

📹 CIMOLAI/S. Petkovic. Music: Jon Kennedy – Toy Soldiers

YouTubeDrone view of ESO's Extremely Large TelescopeBy European Southern Observatory (ESO)
#astrodon#astronomy#astrophysics
Public *
Andrea Luck

Deimos Over Terra Sabaea by ESA Hera Mission taken just 2 days ago!

Full size image: flic.kr/p/2qRV5QD

ESA Hera
Gravity-assist flyby of #Mars
Distance 1000 KM
March 12, 2025

Colourised image processed from: esa.int/Space_Safety/Hera/Hera

For the colourisation, I've used a reference image by ESA's Mars Express of this area: HO544_000 in RGB, taken on 2023-06-09 (raw data available at psa.esa.int)

Credit: ESA/AFC/DLR/FUBerlin/AndreaLuck CC BY

The Potato shape satellite Deimos over Mars, as seen by ESA's Hera during its gravity assist flyby on March 12, 2025. The original image has been colourised (it was black and white) using another reference image that I've processed of this area from ESA Mars Express in Red Green Blue. Deimos is pretty greyish. Colours on the Mars' surface vary between rusty red and darker areas. At the top of the image is the brighter Terra Sabaea region, outlined by darker areas around it, with part of Huygens Crater visible on the right side of the image. Part of Hellas Basin at the bottom right corner, appearing more whitish in this colourisation.
#Space#Astronomy#Astrodon
Continued thread
Public *
François, suricate nihiliste

Well, we're off to a good start. i wrote toot above, then opened my emails to read this, below, from a journal editor -- doesn't occur everyday for sure. A nice way to draw a line below my solar & stellar physics career. Good bye old love, it was good while it lasted 🥲 #Astrodon

"I'm pleased to inform you that I have recommended your revised paper for publication in the section "9. The Sun and the Heliosphere" of Astronomy & Astrophysics.  I hope you won't mind my adding that your discussion in subsections 6.4-6.6 were thought provoking and I hope they'll be more widely read by the stellar community."

Public
Dr Christopher Berry

I am getting really excited for the GR Amaldi meeting in July. Lots of plans are coming together

Abstract submission deadline is Friday 21 March

Registration is open. We will have a free Early Career Workshop before the main meeting, but places are limited

iop.eventsair.com/gr24-amaldi1

We will have public talks, a reception at the Glasgow Science Centre, and a science ceilidh at the conference dinner! Stay tuned for details on a sci/art exhibit

GR Amaldi poster, sowing our exciting logo, a view across the River Clyde of our conference venue, and a list of invited speakers (there are a lot)
#Astrodon#GravitationalWave#Cosmology
Public
Richard

"The four exoplanets orbit Barnard’s Star so closely that their years last only a few Earth days. They are probably rocky and, given their proximity to the star, uninhabitable. In fact, the 2024 study estimates Barnard b’s surface temperature to be a balmy 257 degrees Fahrenheit (125 degrees Celsius).

One of the exoplanets has the smallest mass ever detected using the wobble method, officially (and boringly) known as the radial velocity technique. This new record paves the way for more precise exoplanet hunting than ever before.

Exoplanet hunters are particularly interested in rocky planets within habitable zones, the ideal distance from a star to sustain liquid water. Why? Because water is a prerequisite for life—and maybe not just our own."

Astronomers Confirm 4 Rocky Exoplanets in Earth’s Backyard, Just 6 Light-Years Away
gizmodo.com/astronomers-confir

Gizmodo · Astronomers Confirm 4 Rocky Exoplanets in Earth’s Backyard, Just 6 Light-Years AwayA new study finally sheds light on our mysterious cosmic neighbors and sets a planet-hunting record.
#astronomy#Astrodon#exoplanet
Public *
franco_vazza

#paperday by Giada Piagnataro et al. ( including @annalisa_bonafede and me)

"Detection of magnetic fields in superclusters of galaxies"
arxiv.org/pdf/2503.08765

analysing with LOFAR (LOTSS) and VLA surveys (NVSS) the Faraday Rotation of ~4500 sources within and beyond a few famous superclusters of galaxies (Leo, Hercules, Corona Borealis).

Cool result: a field of ~20nG is detected on very large scales surrounding all these systems!

#astroph#astronomy#astrodon
Public
.

Decades ago, astrophysicist Stephen Hawking theorized that the Big Bang could have flooded the universe with tiny black holes, but the theory was never proven.

A group of researchers thinks they've found proof — with the discovery of a "stupendously powerful neutrino" at the bottom of the sea. The new hypothesis, not yet peer-reviewed, is that the neutrino is the signature of an evaporating black hole.

livescience.com/space/black-ho

Live Science · Evidence for Stephen Hawking's unproven black hole theory may have just been found — at the bottom of the seaBy Paul Sutter
#science#astrodon#BigBang
ExploreLive feeds
About