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.
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.
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.
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.
Posted to the Fediverse on 30/5/2023. The James Webb Space Telescope has potentially found water on Enceladus, one of the moons of Saturn. This is a great discovery and shows there is water on other planets. You can read original fediverse post via link below.
Physicists suggest that black holes could have an exit to other places in the universe
Interesting article from Meson Stars regarding black holes having possible exits. I have included a paste of my Fediverse comment below. However feel free to discuss on Fediverse or on Science forums.
This does make some sense, I have heard about white holes, which are the opposite of black holes as they allow matter to be ejected in to space. This seems to tie in with the suggestion in the article that if you could pass through you cannot get back again. However in relation to this
"Scientists have already said that all matter inside a black hole is destroyed, "
I got the impression matter can't be created or destroyed, it is interchangeable with energy. In which case, could it be that matter is drawn in to a black hole, somehow converted in to energy then ejected from a white hole?
So purely on a speculative idea
So how do we find these white holes, perhaps we have already found them as we can detect things like gamma ray bursts or neutrino emissions but can't always explain them, perhaps these are related to white holes and we are observing the release of energy in to space as these or similar phenomenon
