markmccaughrean, to photography
@markmccaughrean@mastodon.social avatar

Day 8

Finally managed to sit down & my laptop & catch up on email & some work commitments today.

Quite enjoyed it, to be honest, after two weeks of packing & unpacking 😬✌️

megschwamb, to Astro
@megschwamb@mastodon.online avatar

Hubble moves to single gryo mode. This moves ensures the space telescope can keep on observing well reserving/saving one of the good functioning gyros for the future. https://science.nasa.gov/missions/hubble/nasa-to-change-how-it-points-hubble-space-telescope/

megschwamb,
@megschwamb@mastodon.online avatar
megschwamb,
@megschwamb@mastodon.online avatar

A nice summary here as well of the gyros, HST pointing, and one gyro mode. Looks like HST will not be able to observe moving objects that are closer to Earth than Mars' orbit. https://science.nasa.gov/mission/hubble/observatory/design/hubble-one-gyro-mode/

coreyspowell, to space
@coreyspowell@mastodon.social avatar

Some planets are born alone, live alone, and die alone. The ESA's Euclid space telescope just found a nest of these loners in the constellation Orion.

At least the rogue planets have chosen a gorgeous spot to go about their business: This is where the newfound worlds are hanging out (toward the top of the image).

https://arxiv.org/abs/2405.13497

coreyspowell,
@coreyspowell@mastodon.social avatar

Oh there you are!

The circle marks the location of a newborn free-floating planet (aka "rogue planet") wandering near the Horsehead Nebula.

https://www.esa.int/Science_Exploration/Space_Science/Euclid/Euclid_s_view_of_the_Horsehead_Nebula

franco_vazza, to Astro
@franco_vazza@mastodon.social avatar

#SimulatedUniverses :
cosmic rays injected by different processes in my simulation - zoom into a void surrounded by filaments.
ENZO simulations on LEONARDO cluster at CINECA.
#astrodon #astronomy

video/mp4

CosmicRami, to Astro
@CosmicRami@aus.social avatar
CosmicRami, to Astro
@CosmicRami@aus.social avatar

The people I work with are doing cool shit!

I finally got a chance to interview fellow PhD'er Sarah Caddy from our faculty about this excellent new research and looking at stars and satellites (like the ISS) DURING DAYLIGHT HOURS!

THey're using a telescope called 'The Huntsman' and look how many eyes it has 🕷️🔭

https://www.spaceaustralia.com/news/seeing-stars-day

#SpaceAustralia #Astrodon #Astronomy #Telescopes

📸 Caddy et al. 2024

DavidBflower, to Astro
@DavidBflower@mastodon.social avatar

The Sun and sunspots. 1433UT 3 June 2024. #AstroDon #Astronomy #Astro #Space #Astrophotography

franco_vazza, to Astronomy
@franco_vazza@mastodon.social avatar

If you like to have an updated a broad view of how stars in galaxies form across time, or they form in the very early universe probed by JWST, you have two nice overview papers today on
https://arxiv.org/abs/2405.20803 by J. Freundlich and
https://arxiv.org/abs/2405.21054 by many people
to make you happy

image/png
image/png

mpi_grav, to Astro
@mpi_grav@social.mpdl.mpg.de avatar

The gravitational-wave detections continued over the weekend: @LIGO and Virgo observed two new possible signals from merging black hole binaries.

1️⃣ S240601aj is from a (luminosity) distance of 17.5 billion light years: https://gracedb.ligo.org/superevents/S240601aj/view/

2️⃣ S240601co is from a (luminosity) distance of 4.5 billion light years: https://gracedb.ligo.org/superevents/S240601co/view/

Overall, 105 probable signals have been observed in O4 so far.

Map of the entire sky showing the most likely regions of origin of the gravitational wave of the candidate signal S240601co. The orange spots cover a total area of about 1080 square degrees.

spacelizard, to Astro
@spacelizard@aus.social avatar

Australian Astronomical Optics (AAO) at Macquarie University is looking for a new director, details in the links below.

https://page.mq.edu.au/STF-Director-AAO-Macquarie.html

https://mq.wd3.myworkdayjobs.com/en-US/CareersatMQ/details/Director--Australian-Astronomical-Optics---Macquarie_R000015720-1

Please share with anyone you think might be interested.

#Astrodon #Astronomy #AstroJobs

cafuego, to Astro
@cafuego@misanthrope.social avatar

I ran out into the freezing cold my pajamas at 5:30 this morning to snap the waning crescent and meeting in the eastern sky.

That is now done, so I can stay in bed all following mornings.

andrealuck, to space
@andrealuck@fosstodon.org avatar
proactiveservices,
@proactiveservices@fosstodon.org avatar

@andrealuck 1-3 are great photos, number four is just jaw-dropping. That planet is beautiful.

cplberry, to Astro
@cplberry@mastodon.online avatar

Late night candidate

If real, the source is probably a binary black hole

False alarm rate 1 in 530 yr
GraceDB https://gracedb.ligo.org/superevents/S240601co/
GCN https://gcn.nasa.gov/circulars/36594
Rating 🍧🦭🪢

Initial three-dimensional volume localization. Distance around 1.4 Gpc

franco_vazza, to academia
@franco_vazza@mastodon.social avatar

Sure can be toxic at times and all of that.

Also:

  • this week I sat several times together with colleagues from Russia and Ukraine to discuss future possible projects.

  • an iranian told me how it was to be in Tehran at the end of April, when the Isreel-Iran situation escalated.

  • yesterday at my dinner table there were 1. an italian 🙋‍♂️ 2. a german 3. a brazilian 4. a kroatian 5. an iranian , and it was awesome to discuss the state of the world from all points of views.

astro_jcm, to chile
@astro_jcm@mastodon.online avatar

Soon the telescope platform at ESO's Paranal Observatory in will look very different at night: all four of the 8.2 m telescopes of the VLT will be equipped with lasers! This is one of the ongoing upgrades of the GRAVITY+ instrument, which will allow us to study black holes, stars and planets like never before.

Find out more in this great article by current and former ESO communication interns Elena Reiriz Martinez and Tom Howarth: https://www.eso.org/public/blog/gravity-leap-vlti/

freakazoid,
@freakazoid@retro.social avatar

@astro_jcm I managed to see a guide star operating at Lick Observatory once. Photos show a bright yellow beam, but I was only able to see it in my peripheral vision. Very cool to see this perfectly straight yellow beam projecting upward from the dome!

astro_jcm,
@astro_jcm@mastodon.online avatar

@freakazoid I think Lick was one of the first (maybe the first?) observatories to have a laser guide star.

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