A Vatican astronomer has come to the help of NASA with a historic mission to study an asteroid. Meteorite expert and Vatican astronomer, Jesuit Brother Bob Macke, came to the aid of the US space agency after building a custom device that would allow the study of material of a sample collected from an asteroid. The mission is that of the unmanned spacecraft, Osiris-Rex, which was launched in 2016 in order to collect samples on an asteroid named Bennu. Bennu is located close to Earth and Osiris-Rex successfully collected a cup of material from the asteroid in 2020. Now, the vessel is approaching Earth and is due to release the sample in a return capsule on 24 September before continuing its orbit of the sun. Macke was contacted by the lead of the mission’s sample analysis working group, Andrew Ryan, who asked him to build the device that was needed in order to analyse the sample of the Bennu asteroid. The device has been devised so that it can analyse the density and porosity of the samples to help identify the make up of the asteroid surface. It is known as a pycnometer and NASA has strict requirements for the device, though other companies contacted were not willing to custom make one. Macke, however, took up the task and was able to build it in five weeks thanks to the assistance of students at the University of Arizona who collaborate with the Vatican Observatory’s advanced technology telescope in Tucson. In March it was delivered to the NASA Johnson Space Center in Houston for a test run and is hoped to be used for the real thing when the sample arrives from space. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Twitter, recently rebranded as X, now sorts account posts based on their like counts, straying away from the platform’s historic approach to display them in the chronological order in which they were posted. This new change affects how logged-out users see other profiles and comes as the latest in the string of alterations made to the platform since Tesla titan Elon Musk took over the company last year. Before the platform was rebranded as X, Twitter blocked users without an account from accessing the site in any form, directing them instead to the login page – a move that was quickly ended. Now for logged-out users, X shows posts on other profiles sorted by their like counts. This new sorting method seems to be done based on likes, and not by the number of views garnered by individual posts as it can be seen that tweets with more views, but fewer like counts are showing up lower in the feed. For instance, if a logged-out user – or one who hasn’t signed up on the platform – now visits Elon Musk’s account, they would see on top his cheeky April 2022 tweet about “buying Coca-Cola to put the cocaine back in” and not his most recent post. Some posts by users on the platform suggest this change was likely made towards the last week of July. It remains unclear why this change has been made as it could frustrate users who may want to see the most recent posts made by other profiles. Earlier this week, X also placed Tweetdeck into a paid service and placed it behind a paywall, and also slowed down access to rivals, and news organisations via the platform. The change makes accessing Tweetdeck, rebranded recently to “X Pro”, to require a subscription to the company’s premium service Blue. Those visiting Tweetdeck’s website without a Blue subscription are now being redirected to a page promoting signup to the premium service. X also seemed to have added a delay of about five seconds when people clicked on links to go elsewhere on the web. The delay was found to be applied to a range of rival social media platforms, including Facebook, Instagram, Threads, and Bluesky. Websites of news organisations that have been critical of Mr Musk such as Reuters and the New York Times also seemed to be slow to load. Read More Elon Musk’s Twitter slows down access to rival websites Twitter is turning Tweetdeck into paid service after slowing down access to rival sites Mark Zuckerberg says he’s ‘out of town’ as Elon Musk drives to his house to fight Snapchat experiences ‘temporary outage’ as My AI chatbot posts own Story Musk’s Twitter takeover sparks mass exodus of climate experts Elon Musk’s Twitter slows down access to rival websites

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