In unserer neuen Folge erzählt @pikarl von Geräuschen auf fremden Planeten und Monden. Vor allem geht es um den #Mars. Denn der wird seit zwei Jahren belauscht. 🔴🎙️ ➡️ 🌎🎧 #Podcast#Astrodon
On the cover of Nature, an artist’s impression of the engulfment of a planet by its Sun-like star — an event that awaits Earth and the other planets of the inner Solar System in about 5 billion years.
CHIME Telescope doubles the number of repeating FRBs (Fast Radio Bursts - of unknown origin), providing targets for other telescopes, including those that can measure their positions very accurately, and let us know which galaxies they come from.
Earth's outgoing radio transmission (focus: cellular phone network broadcasts) modelled from 3 stellar viewing points: HD 95735, Barnard’s star, and Alpha Centauri A.
If Aliens were out there and using a telescope like the Green Bank telescope, then they still wouldn't detect these signals from Earth, out to 10 light-years.
But what I am finding interesting, is that the modelling takes into account Earth's rotation, and so mobile towers on different continents come in and out of view - so you could sorta 'map' where civilisation resides if you had technology sensitive enough to make the detections.
A blueprint of where our populations are, for the aliens, basically. But also, the Sun is radio loud when active, so kinda drowns us out, too (unless the aliens have a very big interferometer and can resolve the Earth and Sun individually).
Today oscillated between learning how to run the impact cannon, teaching giant planet interiors, and talking through/editing two different theory aspects of interstellar objects. #astrodon
The impact cannon is currently my favourite discovery of the last year of 'how did I not know this was on campus'. Now to figure out how best to attach some of our less-drillable samples to it. Then SMASHY-SMASHY #astrodon#planetary
The term “illustration” generally refers to a visual representation that is created to convey a concept or idea, rather than to document a specific reality or object. Depictions of distant planets, such as those we see in scientific publications, textbooks, or popular media, are typically illustrations rather than images because they are not based on direct observations or photographs of the planets themselves.
In most cases, depictions of distant planets are based on scientific models and simulations that take into account various physical and astronomical factors, such as the planet's size, composition, atmospheric conditions, and distance from its star. Scientists use this information to create computer-generated images or artistic renderings that aim to convey what the planet might look like based on our current understanding of its properties
However, since we cannot directly observe these planets with our current technology, the images we see are not actual photographs or representations of what the planet really looks like. Instead, they are artistic interpretations that are meant to help us visualize and understand the characteristics of these distant worlds.
So, while these depictions can be incredibly detailed and informative, they are still illustrations rather than images, since they are not based on direct observations or photographs of the planets themselves.
NASA’s Exoplanet Exploration website notes that most of the images we have of exoplanets are “artist's impressions” or “conceptual illustrations.” These images are created by artists and scientists based on the available data and scientific models, rather than being direct observations.
Similarly, in a 2015 article published in the scientific journal Nature (@nature), researchers noted that most of the exoplanet images we have are “computer-generated artistic representations” that are intended to help us visualize the properties and characteristics of these distant worlds.
Overall, while there may be some actual photographs of planets that are relatively close to us, most depictions of distant planets are likely to be artistic renderings based on scientific models and simulations, rather than actual images.
As of writing, there are 5,338 exoplanets confirmed and this number is constantly increasing as new planets are being discovered by astronomers using various detection methods, such as the transit method, radial velocity method, and gravitational microlensing method.
The study of exoplanets is an active field of research, and scientists are continually learning more about these distant worlds and their potential to support life.
Fancy some Apollo nostalgia? We were able to chat to the youngest #Apollo moonwalker Charlie Duke. Legendary Astronaut and the Lunar Module Pilot of Apollo 16 #space#moon#astrodon
End of the road for this part of our #MetropoleOrkest x #SolarOrbiter tour, with our fifth & final show in Tilburg 🇳🇱
We saved the best for last & the kind audience gave us another standing ovation 👏🙇♂️
It’s hard to express what an honour & privilege it has been to work with such lovely, talented people: I learned a lot & hopefully managed to share some of the wonders of the universe too.
Soundcheck in the Tilburg Concertzaal for the last of our #MetropoleOrkest x #SolarOrbiter shows in the current run tonight 🌞🛰️🎶
Has been an enormous pleasure & privilege working with the orchestra & all the crew, along with conductor Jochen Neuffer, co-presenter Twan Huys, director Dirk de Bekker, & producer Friederike Darius 👏
I really hope we get to do more – it has been very special 🙇♂️