Michael Hippke

Gentleman scientist doing astrophysics research

[Michael Hippke @hippke]

@Astro_Wright @andmar74 Juno has only 10% of the fuel left that would be needed

[Michael Hippke @hippke]

@CheerupR @luke_leisher_ Ah, I once write a paper on that question. You need a rocket about 100x larger for the same payload. With chemical propulsion that's borderline sensible. Nuclear will work fine but have risks. Paper: Int.J. of Astrobiology, Volume 18, Issue 5, pp. 393-395 https://t.co/v1iAWXUGaM

[Michael Hippke @hippke]

@yurimilner Yes! It would make optical interferometry over long baselines realistic. Would likely also require quantum memory.

[Michael Hippke @hippke]

@Astro_Wright @skdh I only found this "authorized translation" from 1914 which is not a literal translation of the original paper, but of a book which appears to contain a re-write of the original paper https://t.co/IpyWhwNYqz pp.222ff

[Michael Hippke @hippke]

@InvariantPersp1 @david_kipping @frgsimpson We're about in the middle of the galactic/universe planet-production as-we-know-it (at z=0). The first generation of stars had too few heavy elements for life, the next generations will be increasingly metal-rich, with unknown (likely negative) consequences for life-as-we-know-it

[Michael Hippke @hippke]

@david_kipping @frgsimpson The proper measure is not years but biomass production (or total number of cell divisions per Myr, or similar). In that regard we're already in strong decline today, and a second/third Gyr with a few microbes left won't matter

[Michael Hippke @hippke]

@NatureAstronomy @DrReneHeller No exomoons for now, but we @DrReneHeller hope to find them in the future using our battle-tested tools 🌙

[Daniel Fischer @[email protected] @cosmos4u]

Large #Exomoons unlikely around Kepler-1625 b and Kepler-1708 b: https://t.co/S1GveKn7we -> "Our injection-retrieval experiments of simulated transits in the original Kepler data reveal false positive rates of 10.9% and 1.6% for Kepler-1625 b and Kepler-1708 b, respectively."

[Nature Astronomy @NatureAstronomy]

That's no moon! Reanalysis of HST and Kepler observations throws doubt on whether Kepler-1625 b and Kepler-1708 b have large exomoons after all. @DrReneHeller and @Hippke: https://t.co/aTliNgCzGg

[Michael Hippke @hippke]

I was there

[VisitScotland @VisitScotland]

The University of Glasgow... or real-life Hogwarts?! 👀⚡

📍 University of Glasgow, @peoplemakeGLA 📷 IG/eldvisuals

[Michael Hippke @hippke]

@ExoDransfield Great to see wotan+TLS in use! I'm curious to learn about the fate of the second planet-like signal in the future, with more observations. 👋Nice paper, congratulations! @DrReneHeller

[Betelgeuse Status @betelbot]

Now at 156% of my usual brightness! #Betelgeuse

[Michael Hippke @hippke]

@Astro_Wright @funfactscience Yes, but active control requires maintenance by Aliens or their machines. Such maintenance may end, leading to catastrophy.

[Michael Hippke @hippke]

@Astro_Wright @funfactscience I think the major maintenance issue of Dyson spheres (if left alone) is stability: "The ringworld is unstable" for those who read the Larry Niven books. That instability wouldn't need Gyr to cause a collision.

[Michael Hippke @hippke]

@jradavenport arXiv expenses are ~10 USD per new papers (year 2022: 200k new papers, 2m expenses) incl. hosting of 2m historical papers https://t.co/rr8fmD4ppY

[Michael Hippke @hippke]

@lacalaca85 I can't but there's a typo in the first line of the abstract: "applicarion" --> "application"?

[Michael Hippke @hippke]

@LeaksPh "Your majesty will have to make another effort"

[Michael Hippke @hippke]

@DrReneHeller Interesting: Loosing a moon seems to be common (Fig. 6). Almost all of these collide with the planet, destroying any live (if present). Major issue for biosphere+habitability of O(50%) of planets?

[Michael Hippke @hippke]

@jgreaves6 @david_kipping As discussed on 21 Nov, your Fig.1 (right panel https://t.co/sV8SnCMsFp) is an average of 4 "sections" (!). Can you show them individually incl your detrending, zoomed in so that we can see the details? +for comparison, plot Fig.3 (right panel https://t.co/PN0ATRHwqo) same scale