Paul Sutton

astronomy

Stsci lectures Feb 2024 update

I have been catching up on these lectures as they are fascinating. The LISA talk was also good as it gave a lot of background information as to the science behind this. Exciting times to come, even though it may be a decade before the mission is launched in to space.

So far I have watched:-

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#STSCI,#JWST,#LIGO,#LISA,#Space,#Astronomy,#Research,#Science,#Physics,#Astrophysics


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There are 40 quintillion black holes in our Universe

This is a huge number, I think this something like 40 10^24

or 40,000,000,000,000,000,000,000,000

Which is according to Scientists is the estimate of the number of black holes in the galaxy. The article on big think is here

This is why we use SI units and express huge numbers in powers. So 10^6 is a million or 1,000,000 for example.

It also makes it easier to multiply together as

10^6 x 1000 = 10^6 x 10^3 = 10^{6+3} = 1,000,000,000 or 10^9

Tags

#Space,#Astronomy.#Blackholes,#Counting,#Estimate


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A Giant Black Hole Destroyed a Star and Threw the Pieces into Space

I am sharing this 'as-is' the original fediverse post text is quoted below along with a link to the article.

A pair of X-ray telescopes have observed the messy aftermath of a star that came too close to a supermassive black hole 290 million light-years away. It's believed that the star had three times the mass of the Sun, so this was one of the largest tidal disruption events ever seen. Although the black hole consumed some of the star, most of its guts were thrown into the surrounding space, polluting the region with the chemicals that allowed astronomers to estimate its stellar mass.

Tags

#Science,#Astronomy,#Xray,#SuperMassive,#Blackhole


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Too many black holes and Carbon

Latest JWST update,

Tags

#Astronomy,#Cosmology,#BlackHoles,#Carbon,Universe


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Astronomers Scan 11,680 Nearby Stars for Signals from Advanced Civilizations

More research on looking for life and intelligent life in outer space.

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Tags

#Astronomy,#TESS,#AdvancedCivilizations


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Euclid space telescope sends back first images

The Euclid space telescope has now sent back it's first images. As reported in New Scientist on 31 July 2023. You can read the full article here

So all good stuff, The telescope can exmine both visible and infrared light.

Tags

#Space,#Euclid,#Astronomy,#Light,#InfraRed.#Visible,#ESA,#NASA,#Science


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Advances in formation theory of supermassive black holes.

Another article posted to the Fediverse. This looks at new theories around the formation of Supermassive black holes

Supermassive black holes exist in the centres of Galaxies, there is one at the centre of the Milky way galaxy which was photographed a few years ago. The photo below is from the Wikipedia article.

Milky Way black hole

Links

Tags

#Astronomy,.#Astrophysics,#Cosmology,#SuperMassiveBlackHoles, #Formation.


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Diverse organic-mineral associations in Jezero crater, Mars

The rover that just keeps giving, so looks like “NASA's Perseverance Mars rover discovers more evidence of building blocks of life on Mars.”.

This is from the original Fediverse post by Natalie Davis

NASA's Perseverance Mars rover discovers more evidence of building blocks of life on Mars. Although the organic molecules were not necessarily the products of biological processes, it does raise the chances Mars once had life and could indicate we're looking in the right place.

So exciting stuff, the full article in Nature can be found here

So we are finding more evidence Mars may once have had life. If you want to learn more about some of the basic building blocks of life and how we go about finding these, please check a previous post about the Mumbai University Astrobiology course videos

In the mean time feel free to ask on Fedi or on Science forums.

Tags

#Mars #Perseverance #life #astronomy #astrophysics #astrodon #space #science


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Exoplanets Transit simulator

This was posted to Mastodon by Dr. Alexandre Santerne. Just had a go and it looks really nice and smooth, and has few options to change the simulation parameters.

Do you know how #astronomers are hunting for #exoplanets ? Most of them are discovered with the transit and/or radial velocity techniques.

We developed at #LAM (#laboratoire d'#astrophysique de #Marseille) a web tool that simulate an #exoplanet and show you their photometric and radial velocity signals. Feel free to play with the parameters and see how they change the signals.

Links

Tags

#Exoplanet,#Astronomy,#Astrophysics,#Marselle,#Simulator,#Transit, #Stars,#Star,#Exoplanet,#Spectra,#AbsorbtionSpectra,#EmissionSpectra


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