YouTube video by Does It Fly? | Roddenberry Entertainment The Evolutionary Case for REAL DRAGONS

New Does It Fly? episode is out! And @hmoluseyi.bsky.social and I are talkin' about dragons!!! Enjoy this look at the science + story of the animated HOW TO TRAIN YOUR DRAGON films as you get ready to go see the new live action version! www.youtube.com/watch?v=Ww84...

Michelle is not active ok Xitter as far as I can tell. BTW, she is as warm and brilliant in person as she comes across on TV. I miss working with her!

YouTube video by Does It Fly? | Roddenberry Entertainment Could THE LAST OF US Actually COME TRUE?!?

In honor of the new season of #TheLastOfUs, @hmoluseyi.bsky.social and I take a look at the science and story of Cordyceps, the brain infecting fungus 🧠 🍄 on the latest episode of #DoesItFlyPodcast. Could it really happen? Check it out: youtu.be/h8141JQ_kes?...
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NASA’s coverage of last April’s Total Solar Eclipse, featuring telescope footage provided by our own @kuiperkat.org, has been nominated for a Webby Award!!

To show your support, vote for the coverage via:
vote.webbyawards.com/PublicVoting...

Omg Hakeem Oluseyi will be in the next The Planetary Society book club! I wish I could participate! 😭

We had @hmoluseyi.bsky.social with the opening talk, “Star Hackers: How Educators Rewrite Destinies”, both inspiring and very funny!

I appreciate that! I hear it's a pretty amazing read.

I give you my word. I'll read what you have shared. What I take away is that while the Kardashev Type II civilization is practically and thermodynamically impossible as described in his paper, there are still viable options for building a Dyson Sphere and harvesting some fraction of the energy.

Exactly. And imagine what happens to planetary orbits when you move Jupiter's mass from 5 AU to 2 AU!

You can build a solid opaque shell, but it can't absorb and transmit all the Sun's energy for use. It will radiate in the IR, as you said. Kardashev consumes 10^33 ergs/sec and transmits 10^33 erg/sec for use. That's impossible with Jupiter's mass of material.

Kardeshev states ≈4×10^33 ergs/sec, (iALL the Sun's output) is consumed and transmitted by his sphere.

I agree with you that one can make an array that absorbs SOME solar energy and transmits it. Do you agree it is impossible to absorb and use ALL the Sun's radiation with Jupiter's mass alone?

You make my point!

While I have read Kardashev's paper, I have not read Dysons. I did not realize that any old leaky, spherical array qualifies as a Dyson sphere. I should have clearly stated that a Dyson sphere satisfying the Kardashev Type II civilization requirements is impossible.

You're right in part. I deviate from the literature but not from Kardashev: "II-a civilization capable of harnessing the energy radiated by its own star...; energy consumption at ≈4×10^33 erg/sec." That's ALL the radiation. The same value is to be transmitted for use. I stayed true to Kardashev.

Thanks for the correction of which came first. Kardashev says, "II - a civilization capable of harnessing the energy radiate by its own star...; energy consumption at ≈4 × 10^33 erg/sec." His table also has a table with the same number for power transmission. Sure sounds like he's harnessing ALL.

Thanks for the link! I'm basing my comments on the Kardashev scale Type II civilization description, which inspired the Dyson Sphere. It specifically requires harnessing all of the star's energy, i.e., no leaks. If that requirement is relaxed, we're talking about two different definitions.

Thank you!

Yo! I'm here.

YouTube video by StarTalk Answering Questions about Hubble Tension, Dyson Spheres, & Relativity

To all my Geeks and Nerds like myself this is a must watch from @neildegrassetyson.com and Hakeem Oluseyi youtu.be/y8b93R3kfso?...

As you should!

Panelists Hakeem Oluseyi (physicist), Sanae Kubota (engineering lead), Martina Gkioulidou (project scientist), and Dave McComas (principal investigator)

I am standing in front of the Johns Hopkins Applied Physics Laboratory logo banner with a purple space background.

...& bid it a safe journey to Cape Canaveral & then, the stars! I remain excited to work with this NASA mission & share the hard work of this diverse team with my network, the Star Trek fandom, & the STEAM community at large. We have a battle ahead of us, but NASA has survived many storms & is...

I am standing in front of a tall poster that says IMAP STEM DAYS with the orange and white IMAP logo and a digital rendering of the spacecraft below it.

Just wrapped IMAP Day at Johns Hopkins Applied Physics Lab - what a great event! A fabulous panel led by Hakeem Oluseyi with three of the IMAP team leads, activities for kids, and lots of fun swag for all. We got to see the spacecraft through the viewing area into the clean room (no pics allowed)...

😂😂😂 Love it! There are definitely fields of physics in which this is true.

I also realized that every stellar envelope is already a natural Dyson Sphere. They all leak copiously! So the standard Dyson Sphere is an artificial envelope around the natural envelope. But this outer, Jupiter-mass envelope, is 1/800th the mass and 1/900th the volume of the Sun's natural envelope.

I took Jupiter's non-H/He mass and distributed it into a uniform spherical shell with a radius of two solar radii and the same density of water, then calculated the sphere's thickness. I got ~1 km thick. Redoing the calculation at 2 AU, I get a shell thickness of ~2.6 cm.

To absorb ALL the Sun's radiation? Please show me.

YouTube video by StarTalk Answering Questions about Hubble Tension, Dyson Spheres, & Relativity

Guess who’s also on #BlueSky?! Yes, the #ASP's CEO Dr @hmoluseyi.bsky.social! #DYK his recent appearance on #StarTalk, hosted by Dr @neildegrassetyson.com, is now available for everyone to watch on YouTube? They discuss #DysonSpheres and “now” is just an illusion. 🔭

www.youtube.com/watch?v=y8b9...

I forwarded this post/allegation to T-800 and asked him if it was true. He replied, "Negative."

I'm addressing a subtle point that is not obvious in the posted video. The Dyson sphere I'm referring to is one that achieves Kardashev Scale Type II civilization—one that can harness ALL or most of its star's energy. There ain't enough mass to do that.