| website | https://aerospaceresearch.net |
| callsign | dh0rn |
| MATRIX | @Hornig:matrix.org |
Happy Birthday, #HYPSO1!🎉
Launched into orbit 4 years ago today aboard #SpaceX #Transporter3 w/ #ExoLaunch.
Since then, you’ve been expertly operated by your #NTNU team - congrats on an amazing mission so far!
Some results from #IAC2024:
https://www.researchgate.net/publication/385377563
@ #IAASmallSat
Our talk from today at #39c3 is online already!
https://media.ccc.de/v/39c3-chaospager-how-to-construct-an-open-pager-system-for-c3
Wooo it's up! New paper alert! I will write a summary thread about this paper tomorrow morning when I'm not quite as mentally exhausted!
"An Orbital House of Cards: Frequent Megaconstellation Close Conjunctions" by Thiele, Heiland, Boley, & Lawler https://arxiv.org/abs/2512.09643
Not recommended for reading right before bed. It's real bad up there in Low Earth Orbit, folks.
The number of objects in orbit is rapidly increasing, primarily driven by the launch of megaconstellations, an approach to satellite constellation design that involves large numbers of satellites paired with their rapid launch and disposal. While satellites provide many benefits to society, their use comes with challenges, including the growth of space debris, collisions, ground casualty risks, optical and radio-spectrum pollution, and the alteration of Earth's upper atmosphere through rocket emissions and reentry ablation. There is potential for current or planned actions in orbit to cause serious degradation of the orbital environment or lead to catastrophic outcomes, highlighting the urgent need to find better ways to quantify stress on the orbital environment. Here we propose a new metric, the CRASH Clock, that measures such stress in terms of the timescale for a possible catastrophic collision to occur if there are no satellite manoeuvres or there is a severe loss in situational awareness. Our calculations show the CRASH Clock is currently 5.5 days, which suggests there is limited time to recover from a wide-spread disruptive event, such as a solar storm. This is in stark contrast to the pre-megaconstellation era: in 2018, the CRASH Clock was 164 days.
Astronomers recently discovered the 40 000th near-Earth asteroid! These space rocks range from a few metres to a few kilometres in size and are on orbits that bring them relatively close to Earth. Each new discovery is both a reminder of our planet’s vulnerability and a testament to how far the field of planetary defence has advanced in just a few decades.
Do you need a GNSS-independent, spoofing-resilient #SpaceDomainAwareness solution to 3D-position your satellite in orbit?
Join our Lucas at #IAC2025 as he presents how #JenaOptronik achieves it (2.Óct, D5.3).
We had the privilege of collaborating on-orbit with data from our star trackers on 3 GEO satellites (#AlphaSat +2) to create an SSA/SDA showcase.
Don’t miss the opportunity.
See you Thursday
Space Weather
[ Long read]
Perseids Meteor Shower: The Annual Perseids shower is well under way now, peaking at around 07h on 13 Aug.
Given a moonless night, the peak would yield around 100 visual meteors/hour. This year the moon is just past full, so seeing conditions will be very difficult and many fewer meteors are likely to be seen.
An alternative way to observe them is by using radio signals refracted from the ionized plasma trails of the meteors. This method of observing has been going on for decades - I used to do it 10-20 years ago until the powerful VHF TV transmitters closed down.
Anyone can join in by using the CAMRAS WebSDR at http://websdr.camras.nl:8901/ and tune to the GRAVES meteor radar signal on 143.050 MHz.
It's recommended to pipe the audio stream to Spectrum Lab as the video of the FFT display is of low quality. Follow the instructions here for setting up Spectrum Lab: https://werkgroepmeteoren.nl/radiometeoren-visualiseren/
Details forthcoming, but for now some #UK folks may want to be aware of this event on 9th September at Newcastle.
@[email protected] , ich freue mich schon auf deine Space Comic Session heute beim Tag der Raumfahrt in #Jena! 😀
#TdR2025
https://www.tagderraumfahrt25.de/teilnehmer/jena-optronik-in-kooperation-mit-der-ernst-abbe-buecherei-jena/
I needed this.
I am going to build it!
#aimforthesky to have all stars on a #RaspberryPi display.
Progress updates on @aimforthesky ...
Signalspielplatz
Prof. Sam Lawler
ESA (unofficial)
𝑮7𝑰𝙕𝑼 𝑹𝙍𝑫
HamChallenge Bot
Dr. John Barentine FRAS