#Galaxy #MilkyWay #Kepler
<<Is the Milky Way’s rotation curve declining?>>

<<A bigger question whether the Milky Way’s rotation curve is declining in a Keplerian fashion. This would indicate that the total mass has been enclosed>> *if and only if* the enclosed mass has a spherical distribution.

Otherwise a good analysis.

🔗https://tritonstation.com/2023/09/08/is-the-milky-ways-rotation-curve-declining/

@paulmasson #Kepler. I'm not 100% clear what happens with the #vector outside of a two body problem though. Iin particular, not modeling the Earth as a simple point mass, but having some extent. Central inverse square...with N centers?

But my problem can be point-mass during some parts and during those parts I have another perturbation that I'm trying to tease out. Think something like solar radiation pressure, although it isn't #physics based like that.

Astronomers discover last planets seen by Kepler Space Telescope

https://academic.oup.com/mnras/article/523/1/474/7178009

Search over 1,500 astronomy and space news releases at www.stars-n-stuff.com/news-stories

#astronomy #space #science #news #stargazing #Kepler #exoplanets

Image: NASA/Ames/JPL-Caltech

Shortly after Johannes Kepler received the three laws of planetary motion on Mt. Sinai, he dropped one and spent the rest of his life working to rediscover it.

#science #sciencefacts #JohannesKepler #Kepler #lawsofplanetarymotion #aprilfools #april1 #AprilFoolsDay

A researcher at Indiana University, who just received a degree in music composition and chemistry, has turned the light spectra of chemical elements into sound, creating a "musical periodic table."

I feel like Pythagoras and Kepler would be pleased...🪐 🎶

https://www.chemistryworld.com/news/musical-periodic-table-being-built-by-turning-chemical-elements-spectra-into-notes/4017204.article

----------
#chemistry #music #science #beauty #physics #pythagoras #kepler

Sehr interessanter Vortrag auf dem Kanal „Urknall, Weltall und das Leben“ über den Widerstreit verschiedener astronomischer Weltbilder und Johannes Keplers revolutionären Beiträgen zur Astronomie:

Johannes Kepler und die kopernikanische Wende – der Weg zur modernen Astronomie

https://invidious.nerdvpn.de/watch?v=K-xi3FXB8Ys

#uwudl #kepler

She finds that, in the mASC framework, an atmosphere is unlikely for the habitable zone planets of #TRAPPIST-1, #Proxima Cen and #Kepler-438 b.

#BadHonnef23

Happy 451st Birthday to Johannes Kepler! Elliptical orbits FTW! 🪐💫
https://en.wikipedia.org/wiki/Johannes_Kepler #kepler #science #histsci

Tocaba actualización del
#Celestron SC9,25" con 2 básicos que a mi entender deberían ser equipamiento de serie de este tubo. Izquierda tornillos con maneta "Bob´s Knobs" para colimar el secundario. Derecha enfocador Crayford #Kepler doble velocidad para enfoque preciso...🧵⬇️

5️⃣ So, the team wanted to understand the capabilities of #JWST to detect #exoplanet #atmosphere. But how does it work ?

When (if) a planet passes in front of its host star, it blocks some stellar light, which produce what we call "a #transit". The bigger the #planet is (relative to its host #star), the deeper the #transit is. We know several thousand transiting #exoplanets, most of them being discovered by the #Kepler and #TESS #space missions (#NASA) or by the #WASP survey on the #ground.

5️⃣ So, the team wanted to understand the capabilities of #JWST to detect #exoplanet #atmosphere. But how does it work ?

When (if) a planet passes in front of its host star, it blocks some stellar light, which produce what we call "a #transit". The bigger the #planet is (relative to its host #star), the deeper the #transit is. We know several thousand transiting #exoplanets, most of them being discovered by the #Kepler and #TESS #space missions (#NASA) or by the #WASP survey on the #ground.

Oh look it is a panicked little dust grain...
Tho people laughed more at my "not to scale" note.
#exoplanet #astrodon #astronomy #physics #kepler #astrophysics #science #outreach #PlanetaryScience

The analysis of the #Kepler bound #planet was work led by my brilliant PhD student, David Specht. We were also aided by great work from colleagues Radek Poleski (Warsaw) and Matthew Penny (Lousiana State).

The #NASA #Roman and, potentially, #ESA #Euclid missions will allow us to #estimate much more reliably the fraction of potentially #habitable #Earth mass #planets. Exciting times!

Thanks for reading. If you've enjoyed this thread, why not boost it to others.

End of 🧵

@nbatalha @ec_euclid I'm hoping so. But there are no guarantees yet since #euclid has to deliver on the #cosmology #science first and foremost. But I love the fact that one of #kepler's last acts (a mission that you were so deeply involved with of course!) was to find a #microlensing #planet. I feel like it's passing the baton on to #Roman to extend #census.

So, even with the first detection from space of an exoplanet using microlensing, we are challenging the boundaries of planet formation. #NASA #Roman and #ESA #Euclid may detect thousand of planets. They will complete the #exoplanet #census started by #Kepler. They will help us to better understand whether #planetary #architecture of our #SolarSystem is common or unusual. (9/n)

The last candidate we found was not an #FFP. Instead it was a bound #planet. In fact it is the most distant planet yet found by #Kepler and is twice as far away as the next most distant. It's the first bound planet to be discovered from #space using #microlensing. Remarkably it's of the closest analogues to Jupiter yet found, though it orbits a #star 60% the mass of the #Sun. Theory suggests it is almost too small to host a Jupiter. https://arxiv.org/abs/2203.16959 (8/n)

Our intention was to use the #Kepler mini-survey to find #FreeFloatingPlanets (#FFP). FFPs are #planets that are alone in deep space. Remarkably, there was already some tentative evidence for such planets. Perhaps they formed like #stars out of gas by themselves, or perhaps they were ejected from their #planetary system. We need data to get the answers. Indeed our work uncovered 5 new candidates, 4 of which are consistent with #Earth mass FFPs. https://doi.org/10.1093/mnras/stab1377 (7/n)

We recently tested out the idea of doing #microlensing from #space using the #NASA #Kepler #telescope. Kepler has so far found thousands of #exoplanets but using the #TransitMethod, not microlensing. But in 2016, before it stopped working, it did a mini microlensing survey. Kepler wasn't designed to do microlensing and colleagues spent years developing a #DataReduction pipeline that would work. Then, my #postdoc Iain McDonald and I built a sophisticated pipeline to find #planet candidates (6/n)

@nbatalha Welcome here Natalie.

You aren't on #Kepler-10b, yet. 😉

Ein Mangel an Phantasie bedeutet den Tod der Wissenschaft. (Johannes #Kepler)

Gelesen im "#Phänomania #Büsum"