Alejandro Lumbreras-Calle
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alumbrerasc.bsky.social
Alejandro Lumbreras-Calle
@alumbrerasc.bsky.social
PhD in Astrophysics. UCM, IAC, and now a postdoc at CEFCA (Teruel, Spain). Star-forming galaxies and galaxy evolution.
🔭 Now it's official, the nebula was never in Andromeda!

Our paper has been published and we show that the large 🧪 oxygen nebula is in the Milky Way.

This arc was discovered by amateurs photographing Andromeda with an [O III] filter, and now we have new things to say... ⚛️
December 11, 2025 at 10:03 PM
We've been following 3I/ATLAS from @cefca-oaj.bsky.social in Spain (Teruel)!

This is just the 3rd interstellar object that we see enter the Solar System.

I created this video with the observations🔭 we have made: you can see the comet moving through the field of stars.

We hope to get more data!
July 22, 2025 at 6:23 PM