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@planetgreaves.bsky.social

Planet Venus scientist, creative, astronomer.

1,592 Followers  |  454 Following  |  113 Posts  |  Joined: 13.11.2024
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Posts by (@planetgreaves.bsky.social)

Congratulations Emily, it sounds like an amazing opportunity! πŸŽ‰πŸŽ‰πŸŽ‰

03.02.2026 16:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Science for Fiction Science Podcast Β· Real science that inspires science fiction, from the latest in cosmology to the strangest biology. Brought to you by the Science Fiction Foundation.

Science for Fiction has now made the leap to cyberspace as the Science for Fiction podcast, made in conjunction with the @sffoundation.bsky.social The first episode is me interviewing @defjaf.bsky.social about his new book The Random Universe. Have a listen! apple.co/44A5GIg

18.12.2025 16:40 β€” πŸ‘ 6    πŸ” 7    πŸ’¬ 0    πŸ“Œ 1

I would love one of these but with WOMAN OF VENUS on it! πŸ€”

12.12.2025 12:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Original post on mastodon.social

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 […]

11.12.2025 02:48 β€” πŸ‘ 13    πŸ” 93    πŸ’¬ 3    πŸ“Œ 4
Bronze plaque saying "A Letter to the Future. Ok is the first Icelandic glacier to lose its status as a glacier. In the next 200 years all our glaciers are expected to follow the same path. This monument is to acknowledge that we know what is happening and what needs to be done. Only you know if we did it.  August 2019. 415ppm CO2"

Bronze plaque saying "A Letter to the Future. Ok is the first Icelandic glacier to lose its status as a glacier. In the next 200 years all our glaciers are expected to follow the same path. This monument is to acknowledge that we know what is happening and what needs to be done. Only you know if we did it. August 2019. 415ppm CO2"

TIL about a memorial ceremony in Iceland in 2019 to mark the end of a glacier, changing the place name from OkjΓΆkull to Ok (jΓΆkull = glacier). Uncompromising wording on the bronze plaque:
"This is to acknowledge that we know what is happening and what needs to be done. Only you know if we did it".

07.12.2025 17:17 β€” πŸ‘ 12791    πŸ” 5241    πŸ’¬ 113    πŸ“Œ 188
A snapshot of the community quilt, featuring panels depicting scenes from space, captioned: 'Cosmic Threads Community Quilt Exhibition. Launching 24 January, 2026.'

A snapshot of the community quilt, featuring panels depicting scenes from space, captioned: 'Cosmic Threads Community Quilt Exhibition. Launching 24 January, 2026.'

🧡 To mark 80 years of discovery, we invited the public to join us in a celebratory project – Cosmic Threads – a community quilt inspired by Jodrell Bank’s rich legacy.

Now, we’re delighted to share the results with you in a brand-new exhibition: https://ow.ly/lv6N50XCNyM

06.12.2025 19:30 β€” πŸ‘ 14    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
World with olive green, white and blue and text.

World with olive green, white and blue and text.

A Cornell-led team said this month that it has created the first β€œcolor key” of microorganisms that live in Earth’s clouds. The idea? If similar color signatures show up in an exoplanet’s clouds, it could be a clue that something alive is hiding there. Read more: buff.ly/O1SFwyM

πŸ“Έ Pixabay/EarthSky.

21.11.2025 17:03 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Crocus DLA

We have a PhD opportunity at the University of Reading focused on analysing Jupiter and Saturn auroral observations!

Title: Investigating Earth-like responses to the Solar Wind in Gas Giant Upper Atmospheres

Supervisor: me!

Full description/application portal:
www.findaphd.com/phds/project...

20.11.2025 14:11 β€” πŸ‘ 36    πŸ” 26    πŸ’¬ 0    πŸ“Œ 1

Good for Sara!

12.11.2025 20:00 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It’s #supermoon time! If you have clear skies tonight (not likely in NW England…!) do have a look. Your brain is not good at measuring the size and brightness of things on the sky, so you might not be able to tell, but a full moon is always nice to look at! πŸŒ• Spoke to BBC 5 Live about it at 6.55am.

05.11.2025 07:53 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

If comets are like cats, and planetary scientists have been studying domestic cats, tigers, leopards, jaguars, etc., of our solar system for many years, then comet 3I/ATLAS barges in like a serval or ocelot on an unbound e=6 orbit from somewhere else πŸ˜‚. But it still purrs and scratches
#3IATLAS

31.10.2025 20:54 β€” πŸ‘ 23    πŸ” 5    πŸ’¬ 3    πŸ“Œ 1
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Search for Organic and Volatile Inorganic Compounds in Two Surface Samples from the Chryse Planitia Region of Mars Two surface samples collected from the Chryse Planitia region of Mars were heated to temperatures up to 500Β°C, and the volatiles that they evolved were analyzed with a gas chromatograph-mass spectrome...

This is interesting, a re-evaluation of the Viking 1976 mission’s non-detection of organics on Mars (see the eletter below the original article). 😲 www.science.org/doi/10.1126/... #astrobiology

27.10.2025 17:24 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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So the Earth has quasi-moons! What is the difference between a moon and a quasi moon? (And which one should I howl at?) #astronomy #news #nature #astrophotography

24.10.2025 13:45 β€” πŸ‘ 10    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0

Yep, all in the context!

21.10.2025 20:33 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Mrs Handley and the Whippets (Learning to be Difficult) | Athene Donald's Blog

My weekend post: learning to be difficult as a teenager. Good practice for coping with academic life as an adult occamstypewriter.org/athenedonald...

20.10.2025 07:48 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Tonight! Come and hear about how we landed on the Moon (and play along at home), how the BBC laughed at my coffee cup, and how I was almost lured into espionage.

17.10.2025 00:06 β€” πŸ‘ 19    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
A spread of the calendar opened to November. two cuttlefish hover over a reef where the female has laid eggs with tiny little baby cuttlefish in them.

A spread of the calendar opened to November. two cuttlefish hover over a reef where the female has laid eggs with tiny little baby cuttlefish in them.

This fall, @megstampede.bsky.social & I are collaborating to create a 2026 calendar!

Each month features a different animal, facts about them, & actions we can take to help them!

Sales will fund our '26 Native Plant Project

Pre-order now, they’ll ship in early November! Squidfacts.net

14.10.2025 22:07 β€” πŸ‘ 128    πŸ” 27    πŸ’¬ 0    πŸ“Œ 3
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β€˜We’re not daft, we’re not stupid, we can still learn’ – the impact of informal science learning on wellbeing in acquired brain injury Science engagement centres offer interactive, hands-on experiences that foster curiosity and public engagement with science. This pilot study explores the integration of a UK science engagement cen...

What a fantastic project - "the impact of informal science learning on wellbeing in acquired brain injury" www.tandfonline.com/doi/full/10....

11.10.2025 06:36 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0