Trump takes a break from making Cabinet picks and attends UFC championship fight in New York

NEW YORK (AP) — Volcanoes were erupting on the mysterious far side of the moon billions of years ago just like on the side that we can see, new research confirms.

Researchers analyzed lunar soil brought back by China’s Chang’e-6, the first spacecraft to return with a haul of rocks and dirt from the little-explored far side.

Two separate teams found fragments of volcanic rock that were about 2.8 billion years old. One piece was even more ancient, dating back to 4.2 billion years.

“To obtain a sample from this area is really important because it’s an area that otherwise we have no data for,” said Christopher Hamilton, a planetary volcano expert at the University of Arizona who was not involved with the research.

Scientists know there were active volcanoes on the near side, the part of the moon seen from Earth, dating back to a similar time frame. Previous studies, including data from NASA’s Lunar Reconnaissance Orbiter, suggested the far side might also have a volcanic past. The first samples from that region facing away from Earth confirm an active history.

The results were published Friday in the journals Nature and Science.

China has launched several spacecraft to the moon. In 2020, the Chang’e-5 spacecraft returned moon rocks from the near side, the first since those collected by NASA’s Apollo astronauts and Soviet Union spacecraft in the 1970s. The Chang’e-4 spacecraft became the first to visit the moon’s far side in 2019.

The moon’s far side is pockmarked by craters and has fewer of the near side’s flat, dark plains carved by lava flows. Why the two halves are so different remains a mystery, said study co-author Qiu-Li Li from the Chinese Academy of Sciences.

Li said the new findings reveal over 1 billion years of volcanic eruptions on the lunar far side. Future research will determine how the activity lasted so long.

___

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

The Canadian Press. All rights reserved.

SAN FRANCISCO (AP) — Disgruntled X users are again flocking to Bluesky, a newer social media platform that grew out of the former Twitter before billionaire Elon Musk took it over in 2022. While it remains small compared to established online spaces such as X, it has emerged as an alternative for those looking for a different mood, lighter and friendlier and less influenced by Musk.

What is Bluesky?

Championed by former Twitter CEO Jack Dorsey, Bluesky was an invitation-only space until it opened to the public in February. That invite-only period gave the site time to build out moderation tools and other features. The platform resembles Musk’s X, with a “discover” feed and a chronological feed for accounts that users follow. Users can send direct messages and pin posts, as well as find “starter packs” that provide a curated list of people and custom feeds to follow.

Why is Bluesky growing?

Bluesky said in mid-November that its total users surged to 15 million, up from roughly 13 million at the end of October, as some X users look for an alternative platform to post their thoughts and talk to others online. The post-election uptick in users isn’t the first time Bluesky has benefited from people leaving X. The platform gained 2.6 million users in the week after X was banned in Brazil in August — 85% of them from Brazil, the company said. About 500,000 new users signed up in one day in October, when X signaled that blocked accounts would be able to see a user’s public posts.

Across the platform, new users — among them journalists, left-leaning politicians and celebrities — have posted memes and shared that they were looking forward to using a space free from advertisements and hate speech. Some said it reminded them of the early days of Twitter more than a decade ago.

Despite Bluesky’s growth, X posted after the election that it had “dominated the global conversation on the U.S. election” and had set new records.

Beyond social networking

Bluesky, though, has bigger ambitions than to supplant X. Beyond the platform itself, it is building a technical foundation — what it calls “a protocol for public conversation” — that could make social networks work across different platforms — also known as interoperability — like email, blogs or phone numbers.

Currently, you can’t cross between social platforms to leave a comment on someone’s account. Twitter users must stay on Twitter and TikTok users must stay on TikTok if they want to interact with accounts on those services. Big Tech companies have largely built moats around their online properties, which helps serve their advertising-focused business models.

Bluesky is trying to reimagine all of this and working toward interoperability.

The Canadian Press. All rights reserved.