sarahrosewatson.bsky.social
Sarah Watson
@sarahrosewatson.bsky.social
35 followers 53 following 5 posts
3rd year PhD student at Uni of Reading. Studying solar wind interactions with minor planetary bodies☀️☄️
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sarahrosewatson.bsky.social
Sarah Watson @sarahrosewatson.bsky.social · 5d
Excited for this! The comet may cross the heliospheric current sheet, which can affect the tail of a comet, so will be interesting to see if we see any evidence of this.😍☄️
astrojonny.bsky.social
Jonathan O'Callaghan @astrojonny.bsky.social · 6d
Interstellar comet 3I/Atlas is flying past Mars today. Might get some cool views!

skyandtelescope.org/astronomy-ne...
Mars Orbiters Will Have Front-row Seats to Interstellar Comet
Spacecraft orbiting the Red Planet will aim a suite of instruments at Comet 3I/ATLAS to capture details about this enigmatic object.
skyandtelescope.org
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sarahrosewatson.bsky.social
Sarah Watson @sarahrosewatson.bsky.social · Aug 27
Thought I would go say hi to the thing that is currently providing me with content for my PhD thesis ☀️😍
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Reposted by Sarah Watson
astrojonny.bsky.social
Jonathan O'Callaghan @astrojonny.bsky.social · Jul 17
One of my favourite stories I’ve written this year.

A third known interstellar object is flying through our solar system right now. What are the 7 biggest questions we want to answer about it?

Story by me in @sciam.bsky.social

www.scientificamerican.com/article/new-...
New Interstellar Object Is Full of Mysteries. Here’s What Scientists Most Want to Learn
Scientists are racing to learn as much as possible about the interstellar comet 3I/ATLAS before it fades from view forever
www.scientificamerican.com
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Reposted by Sarah Watson
chrislintott.bsky.social
Chris Lintott @chrislintott.bsky.social · Jul 21
LOOK AT THE FUZZY LITTLE COMET
astrokiwi.bsky.social
Michele Bannister @astrokiwi.bsky.social · Jul 21
So, what do these observations from @vrubinobs.bsky.social show us about 3I/ATLAS? Well, from as early as June 21, ten days prior to discovery and the earliest that any large-aperture telescope has imagery — it's a comet. The July 3 stack shows it really clearly
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sarahrosewatson.bsky.social
Sarah Watson @sarahrosewatson.bsky.social · Jul 11
Here are the solar wind conditions at 3I/ATLAS (C/2025 N1) over the past week and today using the HUXt solar wind model. (Lighter colours represent faster solar wind speeds) As C/2025 N1 gets closer we are hoping to be able to observe some potential solar wind interactions with the object!
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sarahrosewatson.bsky.social
Sarah Watson @sarahrosewatson.bsky.social · Mar 31
A GIF of my images of the eclipse this weekend, using the SeeStar telescope! ☀️🌕 😍(The most spectacular thing about it being that there were no clouds in Reading throughout!!)
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sarahrosewatson.bsky.social
Sarah Watson @sarahrosewatson.bsky.social · Mar 27
Check out my recent paper, just published in ApJ! ☄️
mathewjowens.bsky.social
Mathew Owens @mathewjowens.bsky.social · Mar 26
@sarahrosewatson.bsky.social has just published a nice study of how comet tail disconnections are associated with particular structures in the solar wind (the heliospheric current sheet). And how data assimilation enables us to better forecast these structures.

iopscience.iop.org/article/10.3...
Three Heliospheric Imager frames of a comet tail from undergoing a kinking motion, followed by a disconnection.
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Reposted by Sarah Watson
science.esa.int
ESA Space Science @science.esa.int · Mar 21
Comet C/2024 G3 (ATLAS) spotted in full glory by #SolarOrbiter.

The #comet was observed with the SoloHI instrument from the U.S. Naval Research Laboratory.

The encounter happened on 14-25 January, while Solar Orbiter was heading toward #Venus and the comet coincidentally swung by the #Sun.

🔭 🧪
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