#PPOD: In 1572, Danish astronomer Tycho Brahe was among those who noticed a new bright object in the constellation Cassiopeia, but Tycho's "new" star was not new at all. Rather it signaled the death of a star in a supernova, an explosion so bright that it can outshine the light from an entire galaxy. As with many supernova remnants, the Tycho supernova remnant glows brightly in X-ray light. Credit: X-ray: NASA/CXC/RIKEN & GSFC/T. Sato et al; Optical: DSS
Thunderbird has come a long way and it's now an actually decent email client on #Linux with full calendar support. Previously I used Evolution, but that was really stuck in the past. This is good.
Now I need to check if the @protonmail plugin works in Linux and I'm set!
@joelpomales@protonmail Proton Bridge does indeed work well on Linux. Yours truly has used it with Thunderbird on Fedora and various flavors of Ubuntu.
Astronomers Watched a Massive Star Just... Disappear. Now JWST Might Have Some Answers
In 2009, astronomers watched a bizarre mystery unfold. An enormous star, with 25 times the mass of the Sun, faded away and disappeared. Although it had been long theorized, it's believed this was a type of failed supernova, where a giant star imploded into a black hole without a bright flash. Astronomers have turned the mighty JWST on the region and found a bright infrared source. Their observations match a stellar merger instead of a single star failed supernova, but there are still more questions than answers.
Astronomers Have Been Watching a Supernova's Debris Cloud Expand for Decades with Hubble
These beautiful wispy tendrils of gas and dust are the expanding waves of debris from a star that exploded 20,000 years ago. The Cygnus Loop is a well-known supernova remnant that measures about 120 light-years across, with the center 2,600 light-years away. If you could see it with the unaided eye, it would appear as large as six full Moons in the sky. Hubble has made repeated observations of this region over 20 years, and now astronomers can compare the changes by blinking back and forth between images.
Really gutted! My old telescope mount is fried and my new one not set up yet ... because ...
THERE IS A FRESH CORE COLLAPSE SUPERNOVA IN NGC 1097
I've imaged this galaxy many times before so a fresh supernova would have been a good pre/post image to catch!
One thing I really love about this galaxy is the central star-forming ring, which measures about 5,000 light years in diameter. It's a beautiful feature and one that can be captured from backyard telescopes.
A couple of older images from me first. NGC 1097 and a close-up of it core, where I compared my very shabby 1-hour, no darks, flats, bias image to Hubble's of the star formation ring. Amazed I could even get any of these results from my light-polluted backyard.
Supernova 2023rve was discovered on 8 Sept 2023, and is a great target for southern observers right now (crying) ... the galaxy reaches almost the zenith (85-degrees elevation) around 2:30 am Sydney time ... the perfect imaging time!
Also sharing a capture from South Australia by Kym Thalassoudis.
Southern observers, turn your telescopes to NGC 1097! A pulsar was just born (well, 48 million years ago it was) ...
A new #JWST view of the remnant of Supernova 1987A.
SN 1987A has been a target of intense observations at wavelengths ranging from gamma rays to radio for nearly 40 years, since its discovery in February of 1987. Located 168,000 light-years away in the Large Magellanic Cloud, it was the nearest supernova to explode in the era of modern telescopes.
The Conversations addon for #Thunderbird has been upgraded to 115, and having it back makes me realize how fundamental it is for my daily use. #Supernova is a welcome step for making Thunderbird a modern email client, but it requires a lot more work to make Conversations obsolete.
Observations of the #supernova#SN2023ixf "were the earliest-ever measurements of polarized light from a supernova, showing more clearly the evolving shape of a stellar explosion".
Looked at the #SN2023ixf
AAVSO light curve for the first time in a while today since it’s been cloudy here lately. Looks like the linear decrease phase ended about two weeks ago after ~70 days since maximum light. Starting to plateau now at ~82 days, expected for a type IIL event
This space bubble looks serene in this #Hubble image, but it is the result of one of the most energetic events in the universe: a supernova explosion. Known as SNR 0509, it exploded about 400 years ago, as seen from Earth: https://bit.ly/3QtD4u5 #space#astronomy#supernova
Just wondering : is there more to the new @thunderbird#supernova UI than just the “Cards” view ?
#thunderbird has been my email client since version 1.0 and I kinda expected a bit more of a UI revamp. Or at least a dark mode where message contents are really displayed on a dark background. Did I miss something ?
No big deal, I’m just curious and I still love it. Kudos to the Thunderbird team to maintain this important piece of software !
Ora che é uscito su #flathub, sto provando il nuovo @thunderbird#supernova: sotto al cofano é sempre la stessa cosa, ma quei due cambi di UI sembrano proprio interessanti e funzionali
Hello Thunderbird family, and welcome back to a long-overdue episode of the #ThunderCast!
@ryanleesipes, @alecaddd and @killyourfm talk about the new features and improvements in Thunderbird 115 "Supernova." But they also share WHY those features were developed, and what's being worked on right now.
Plus, Ryan shares some breaking news about the future of the Thunderbird Project! It's a casual, informative, behind-the-scenes chat.
I have been using @thunderbird for the longest time now since I ever needed email. To be honest I've used it when I needed to then left, but something always brought me back to #Thunderbird.
Recently I found out about the #ThunderCast#podcast and it's great to hear from this open source team and the time and energy to keep it modern. Just updated to the #SuperNova 115 version and it's awesome!
The podcast is where I learned Thuderbird has addons too!
Before (left) and after (right) photos taken using the 3.9-meter Anglo-Australian Telescope show the star that exploded and the supernova shortly after outburst. Credits: David Malin.