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Jonathan O'Callaghan @astrojonny.bsky.social · 1d

I think this is the most New Scientist thing I have ever written

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Jonathan O'Callaghan @astrojonny.bsky.social · 1d

Also my second story to feature a Thai astronomer

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Jonathan O'Callaghan @astrojonny.bsky.social · 1d

And another story by me today!

Eos @eos.org · 2d

Churning cylinders of liquid metal 🤘🏽 are helping scientists uncover the secrets of planet formation. eos.org/articles/pla...

Planets Might Form When Dust “Wobbles” in Just the Right Way - Eos

A liquid metal experiment has shown how magnetic rotational instability might allow dust to pool together in disks around young stars to form new worlds.

eos.org

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Jonathan O'Callaghan @astrojonny.bsky.social · 1d

This is such a fun study.

Einstein's theory of general relativity, and the curvature of spacetime, might save some planets from doom around white dwarfs!

Story by me in @newscientist.com

www.newscientist.com/article/2498...

General relativity might save some planets from death

Some habitable worlds orbiting dead stars could be kept alive for aeons thanks to a quirk of Einstein’s theory of gravity

www.newscientist.com

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Jonathan O'Callaghan @astrojonny.bsky.social · 2d

Image of that growing concrete meme guy interview

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Jonathan O'Callaghan @astrojonny.bsky.social · 5d

😮 Perserverance might have seen interstellar comet 3I/Atlas from Mars

Simeon Schmauß @stim3on.bsky.social · 5d

I think Perseverance may have spotted interstellar comet 3I/Atlas last night from Mars!

After stacking 20 images from Mastcam-Z, I found a faint smudge of light in the constellation Corona Borealis close to the location where the comet was expected. 🔭

Credit: NASA/JPL-Caltech/ASU/Simeon Schmauß

image of the night sky showing a starfield with several dark and bright stars that are quite elongated due to the long exposure time.

the stars of the constellation corona borealis are annotated in green. a faint smudge, perhaps comet 3I/Atlas is marked with a red circle.

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Jonathan O'Callaghan @astrojonny.bsky.social · 5d

Cool map from ESA here showing its path through the Solar System

www.esa.int/ESA_Multimed...

Map of interstellar comet 3I/ATLAS passing through the solar system

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Jonathan O'Callaghan @astrojonny.bsky.social · 5d

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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Reposted by Jonathan O'Callaghan

Jonathan O'Callaghan @astrojonny.bsky.social · 7d

One mega constellation is already crowding orbit. Now more are coming.

SpaceX's Starlink will soon be joined by thousands of satellites from the US and China – and space is about to get busy. What's going to happen?

Story by me in Aerospace America

aerospaceamerica.aiaa.org/features/hea...

Heavy traffic ahead

aerospaceamerica.aiaa.org

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Jonathan O'Callaghan @astrojonny.bsky.social · 7d

One mega constellation is already crowding orbit. Now more are coming.

SpaceX's Starlink will soon be joined by thousands of satellites from the US and China – and space is about to get busy. What's going to happen?

Story by me in Aerospace America

aerospaceamerica.aiaa.org/features/hea...

Heavy traffic ahead

aerospaceamerica.aiaa.org

3 10 27

Jonathan O'Callaghan @astrojonny.bsky.social · 7d

My take on the US government shutdown

Darth Vader is she safe meme worrying about Mars Sample Return

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Jonathan O'Callaghan @astrojonny.bsky.social · 8d

Very Libertines-y

Jonathan O'Callaghan @astrojonny.bsky.social · 8d

Wow that song feels like a blast from the past!

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Reposted by Jonathan O'Callaghan

New Scientist @newscientist.com · 11d

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to understand the mysteries of neutron stars, gamma ray bursts and more

How faster-than-light explosions could reveal the universe’s secrets

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to understand the mysteries of neutron stars, gamma ray bursts and more

www.newscientist.com

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Jonathan O'Callaghan @astrojonny.bsky.social · 12d

No

Jonathan O'Callaghan @astrojonny.bsky.social · 12d

hey Guardian hit me up next time

Jonathan O'Callaghan @astrojonny.bsky.social · 12d

Very werid article this which only quotes one (very knowledgeable!) source but lacks any like... actual first-hand information or substance on most of the points it raises?

4/10, see me after Mega Constellation class

www.theguardian.com/science/2025...

Don’t look up: how Trump’s deregulation drive could obscure the stars and threaten our access to space

Astronomers are warning that the proliferation of satellite constellations like SpaceX’s Starlink, are making their work harder than it’s ever been

www.theguardian.com

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Jonathan O'Callaghan @astrojonny.bsky.social · 13d

Thanks Jacklin!

Jonathan O'Callaghan @astrojonny.bsky.social · 13d

“Humans began domesticating cattle 10,000 years ago. Milk became a key food in pastoral cultures, later spread worldwide with refrigeration, pasteurisation, and industrial dairying. Lactose tolerance evolved in some groups, boosting nutrition. JWST has spotted the earliest galaxy in the universe.”

Jonathan O'Callaghan @astrojonny.bsky.social · 13d

I’m doing a drop intro like this in my next short news hit

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Jonathan O'Callaghan @astrojonny.bsky.social · 13d

What course is this?

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Jonathan O'Callaghan @astrojonny.bsky.social · 13d

Me posting when the entire Western world is asleep

a man with a mustache is sitting on a swing in the park .

Alt: a man with a mustache is sitting on a swing in the park .

media.tenor.com

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Jonathan O'Callaghan @astrojonny.bsky.social · 13d

Nothing can travel faster than light – but there are some pretty convincing illusions in the universe that appear to do so.

From light echoes to backwards explosions, what can we learn from these unusual superluminal events?

Story by me in @newscientist.com

www.newscientist.com/article/2495...

How faster-than-light explosions could reveal the universe’s secrets

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to understand the mysteries of neutron stars, gamma ray bursts and more

www.newscientist.com

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Jonathan O'Callaghan @astrojonny.bsky.social · 15d

Would be amazing if this happened. Obviously pretty fanciful to imagine European spacecraft sending humans to the Moon and Mars, but why not? Might as well aim high, and in the face of uncertainty elsewhere it would be pretty great if Europe emerged as a major player in human spaceflight.

ESA Space Transport @transport.esa.int · 15d

Our vision for the future of space transportation.

@esa.int is crafting a space transportation ecosystem, guiding the companies and engineers of today to develop and test the technologies required to meet future needs.

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Jonathan O'Callaghan @astrojonny.bsky.social · 15d

In terms of a holiday? Pretty reasonable.

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