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Posts by Scott Johnston

Perimeter: Building Canada’s theoretical physics institute
Perimeter: Building Canada’s theoretical physics institute YouTube video by Perimeter Institute for Theoretical Physics

The story of Perimeter Institute, beautifully told in this mini-documentary, is an inspiring one. Worth a watch if you need a little dose of optimism about humanity's future, and what we can achieve when we're putting our best foot forward. www.youtube.com/watch?v=nY39...

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Absolutely incredible.

NASA Astronaut Reid Wiseman, who commanded Artemis II, took this footage from the far side of the Moon with his iPhone.

Watch with sound on.

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Stunning

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[alt text by NASA] The Moon, seen here backlit by the Sun during a solar eclipse on April 6, 2026, is photographed by one of the cameras on the Orion spacecraft’s solar array wings. Orion is visible in the foreground on the left. Earth is reflecting sunlight at the left edge of the Moon, which is slightly brighter than the rest of the disk. The bright spot visible just below the Moon’s bottom right edge is Saturn. Beyond that, the bright spot at the right edge of the image is Mars. Credit: NASA

[alt text by NASA] The Moon, seen here backlit by the Sun during a solar eclipse on April 6, 2026, is photographed by one of the cameras on the Orion spacecraft’s solar array wings. Orion is visible in the foreground on the left. Earth is reflecting sunlight at the left edge of the Moon, which is slightly brighter than the rest of the disk. The bright spot visible just below the Moon’s bottom right edge is Saturn. Beyond that, the bright spot at the right edge of the image is Mars. Credit: NASA

Whoa 🤯

The Moon, in full eclipse, with the #Artemis II Orion spacecraft. Part of the Moon and spacecraft are lit by Earthshine, and both Saturn and Mars are visible to the lower right. Incredible. Details: images.nasa.gov/details/art0...

2 weeks ago 7595 1935 62 133
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Lost Doctor Who and the Daleks episodes discovered in 'ramshackle' collection The Doctor's assistant Peter Purves was invited to a screening of the episodes in Leicester.

Lost Doctor Who and the Daleks episodes discovered in 'ramshackle' collection share.google/AbhHNRYQ2YQf...

1 month ago 0 0 0 0
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a man wearing 3d glasses is pointing and says oh yes Alt: a man wearing 3d glasses is pointing and says oh yes

Two previously missing episodes of classic Doctor Who were just rediscovered. What a treat!

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Grammarly Is Offering ‘Expert’ AI Reviews From Your Favorite Authors—Dead or Alive The tool, offered by the recently-rebranded company Superhuman, gives feedback based on the work of famous dead and living writers—without their permission.

“Instead of producing what looks like a generic critique from a nameless LLM,” Wired reported last week, Expert Review “lists a number of real academics and authors available to weigh in on your text. To be clear: Those people have nothing to do with this process.”🤬

1 month ago 388 115 5 20
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Stole mine too, and I'm a nobody with one minor academic book. Apparently if the topic is narrow and specific enough to you, or You're cited somewhere, grammarly will still pretend to be you. Gross.

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Introducing: Cosmology 101 with Katie Mack
Introducing: Cosmology 101 with Katie Mack YouTube video by Perimeter Institute for Theoretical Physics

I've been going through these videos for some work reasons, and they're so well done. Just great work all around by @astrokatie.com and @perimeterinstitute.ca.

1 month ago 164 35 3 1
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This is Aly. She just learned about capitalism. Certainly not a perfect system, but if that is what it takes to put chippies on the table, she understands. 13/10 (IG: alythebichon)

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Someone let the penguins of the Heard and McDonald Islands know that their long ordeal is coming to an end.

2 months ago 1130 258 19 15
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Anatomy of a Feynman Diagram | PI News

Want to learn how to decipher one of physics' most useful tools? Check out our one-page primer on how to read Feynman diagrams: perimeterinstitute.ca/news/anatomy...

3 months ago 85 23 2 2
Statement by Federal Reserve Chair Jerome H. Powell
Statement by Federal Reserve Chair Jerome H. Powell YouTube video by Federal Reserve

Video message from Federal Reserve Chair Jerome H. Powell:
www.youtube.com/watch?v=KckG...
www.federalreserve.gov/newsevents/s...

3 months ago 23985 9182 1146 2871

Having a toddler means getting to learn unexpected things. Today's discovery: dinosaurs and bees coexisted! 🦖🐝

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Understanding the U.S. Strike on Venezuela | Explainer
Understanding the U.S. Strike on Venezuela | Explainer YouTube video by Heather Cox Richardson

Heather has it right.

3 months ago 1 0 0 0
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Yikes.

3 months ago 1 0 0 0
🎭 Dramatic Monologue: Defying Gravity from @wickedmovie #wicked #wickedmusical #actingmonologue
🎭 Dramatic Monologue: Defying Gravity from @wickedmovie #wicked #wickedmusical #actingmonologue YouTube video by jmcnik: SONGOLOGUES

How Einstein really discovered relativity:

5 months ago 1 0 0 0
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Economics Nobel prize won by researchers who showed how science boosts growth Joel Mokyr, Philippe Aghion and Pewter Howitt share economics prize for work that underlines the importance of investing in research and development.

Joel Mokyr, Philippe Aghion and Pewter Howitt share economics prize for work that underlines the importance of investing in research and development.

go.nature.com/4hj9NNV

6 months ago 209 75 3 18

This is Canada's first official look at the country's most ambitious radio observatory to date, now under construction in Penticton, BC.

7 months ago 1 0 0 0

Every reputable expert I know considers mRNA vaccine technology to be one of the most revolutionary advances in medicine in our lifetimes. Its inventors won the Nobel Prize in 2023. Shutting it down now is pointless self-harm to humanity.

8 months ago 18061 6730 544 282
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UK gets first female Astronomer Royal in 350 years Prof Michele Dougherty is the first woman to be appointed to the influential post.

Congratulations to Professor Michele Dougherty on her appointment as the UK's Astronomer Royal – the first woman to hold the position in its 350-year history! 🔭✨

🔗 www.bbc.co.uk/news/article...

#Astronomy

8 months ago 107 18 2 3

Happy 🎂day!

8 months ago 1 0 0 0
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At first glance this is very, very good news for NASA and other agencies. I think that many missions zeroed out by the White House decree are reversed here. Still a long way to go but this is an excellent sign. I'm sure many others will chime in on this.

9 months ago 359 61 10 3

Fingers crossed. Keep telling your members of Congress this is important.

9 months ago 175 44 3 0

This is an absurd step backwards. NASA stands among the USA's greatest achievements, and to see its science program dismantled so deliberately is heartbreaking.

9 months ago 1 0 0 0

I don't know what I'd do without em!

9 months ago 1 0 0 0
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a man with a backpack is walking through a field with the words `` we 're going on an adventure '' above him . Alt: a man with a backpack is walking through a field with the words `` we 're going on an adventure '' above him .

The world is in for a treat with the Rubin Observatory, mark my words. This feels like one of those things where we won't truly grasp just how big a deal this thing is until after the fact. A decade from now we'll be swimming in new info about the universe that we can't even predict yet.

9 months ago 4 1 0 0

👀

9 months ago 0 0 0 0

"I asked ChatGPT" "I asked Grok" ok well I asked Gandalf and he said he has not passed through fire and death to bandy crooked words with a witless worm

10 months ago 18772 5904 51 91
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The 2025 @swc-can.bsky.social Science Writers and Communicators of Canada conference is getting started! I'm excited to be at UNB with @perimeterinstitute.ca this morning to connect with writers and science comms experts from across the country.

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