Technologies

First moon samples in over 40 years may alter lunar history

«Our current views need readjustment» about how long our beloved white globe remained warm and volcanically active, says a researcher.

In late 2020, a Chinese space capsule delivered fresh moon samples to Earth for the first time in about four decades, and these precious lunar rocks just revealed a new detail about our planet’s glowing companion: Its volcanoes were alive and active considerably longer than scientists thought.

«All our experience tells us that the moon should be cold and dead 2 billion years ago. But it is not, and the question is, ‘Why?'» said Alexander Nemchin, a professor of Geology at Australia’s Curtin University and author of the analysis published Thursday in the journal Science.

Alongside an expansive and international team of researchers, Nemchin discovered that some of the newly transported moon rocks contain lunar fragments from later days of the white orb’s timeline. Dated about two eons ago, these fragments are relatively young. But here’s the kicker: Those same pieces are also remnants of a volcanic eruption.

Connecting the dots, the team members realized they were looking at solid confirmation that the lunar surface was alive pretty late in the game.

«We need to dig deeper with this,» Nemchin remarked. «We are highlighting that our current views need readjustment — further research will tell how dramatic this readjustment should be.»

Welcome back, lunar research

The saga began last year in December, when China’s Chang’e 5 mission sent a spacecraft to scrape the surface of the moon and collect a variety of rock and dust samples for Earth-based analysis. It returned with about 4 pounds (2 kilograms) of extraterrestrial material.

The year 1976 marks the last time lunar samples were brought down to our home planet, an achievement of the Soviet Union’s Luna 24 mission. But before that, NASA’s Apollo missions were running the course from Earth to the moon several times — the crusades returned photographs, moon rocks and personal anecdotes of astronauts.

«There was some need and drive to do this 50 years back,» Nemchin explained. «Then, priorities changed and everybody moved to something else.» But now, he says, «we have the moon back in the focus.»

He notes lunar research is important not only from an astronomy perspective, but also because any effort to travel to the moon — or really, any space exploration — tends to expedite technologies that ultimately benefit us on Earth.

One example of such serendipitous tech comes from Australian physicists’ research in the ’90s. They developed a highly complex mathematical tool hoping to detect smeared signals of black holes that vanished in the cosmos. Unfortunately, they never found any — but their invention paved the way for modern-day Wi-Fi.

Moon rock science

«Every new sample gives us a big boost in understanding what is happening, simply because we still have so few of them,» Nemchin remarked. «Apollo samples have been worked on for the last 50 years and are still actively investigated.»

While analyzing the rocks brought back by Chang’e 5, Nemchin and fellow researchers first checked out what types were present. In particular, they were after basalt fragments, which are correlated with volcanic activity.

«We needed to get an idea about chemical composition of the fragments to be able to compare [them] to the large basaltic field visible from the orbit,» he said. «And, make sure [those] fragments represent this field of basalts and do not come from somewhere else.»

Then, the scientists confirmed specific ages of the pieces of interest. Validating that these fragments are young was one of the main goals of the mission. That’s how the team members expected to prove their hypothesis of the moon having active volcanoes more recently than textbooks suggest.

«All basalts we had before are older than 3 billion years,» Nemchin said. «We also had a few very young points determined from material ejected by very young impacts — impact melts — but nothing in between. Now we have a point right in the middle of the gap.»

Such age determinations are called crater counting, something the team hopes to continue doing in the future in order to attain the full array of rocks to map out each generation of the moon. Nemchin also notes that a few interesting chemical features were found in the basalt samples, including high iron content, which isn’t present in any other retrieved pieces of the lunar surface.

Further chemical research on the rocks, he says, will help answer new questions introduced by the team’s novel findings, such as searching for the source of heat that led to lunar volcanic activity a couple of billion years ago.

And at the end of the day, the Australian geologist emphasizes that «what is important for me in all this is that we managed to bring a large international group of people to work on the sample.»

«Somehow,» he added, «In the current situation when international travel is still rather restricted, I had more interaction with different people than in the previous years when we could move around any way we liked.»

Technologies

Australians Flock to VPNs in the Wake of Online Age-Restriction Laws

App downloads for VPN services increase sharply as websites in Australia go behind age-restriction walls.

A new set of laws in Australia requiring adult websites and app stores to age-restrict content for those under 18, and requiring AI companies to restrict chatbot offerings from displaying certain types of sensitive or adult content to minors, is apparently driving many to download Virtual Private Network apps there.

Major adult sites have closed their virtual doors to those who aren’t age-confirmed in Australia, and these changes follow a nationwide ban on social media use by teenagers and young children that went into effect in December.

According to reports from Reuters, The Guardian and others, in response to the bans, downloads of VPN-related apps, which people can use to circumvent location-based restrictions, are sharply on the rise. According to Reuters, three of the 15 most downloaded free iPhone apps in the country were VPN-related as the new laws went into effect on Monday.

Lawmakers in some regions, including the US, are well aware that people use VPNs in this way. In states such as Michigan and Wisconsin, laws are being proposed to limit or outright ban VPN use. Wisconsin’s proposed law would require adult sites to block VPN traffic, while Michigan’s proposal would ban VPN use entirely in the state.

There is also a proposal in England under consideration to ban VPN use by minors. That proposal is currently under review.

Technologies

Here’s How to Track the Artemis II Mission in Real Time With NASA’s New Tool

The tool will let you track NASA’s modern lunar program during its 10-day flight around the moon and back again.

More than half a century after astronauts last left footprints on the lunar surface, humanity is preparing to return to the moon. The excitement surrounding NASA’s Apollo program once captivated the world, and now NASA hopes to rekindle that same sense of wonder with its modern lunar effort, the Artemis program.

NASA’s Artemis II launch is scheduled for the first week of April. It’ll be the first human mission to the moon since 1972, and it should be quite the achievement for the Artemis program. Now, NASA has released a new tool that lets the public track Artemis II in real time.

The Artemis program is NASA’s long-term effort to return humans to the moon and establish a sustained presence there for the first time since the Apollo program. The program aims to land astronauts near the lunar south pole, develop new technologies for long-term exploration and use the moon as a stepping stone for future missions to Mars.

The Artemis Real-time Orbit Website, dubbed AROW, is already available to the public, although there isn’t much to see since the launch is still a few weeks away. It’s also available directly from the NASA app if you’re using a mobile device. The site lets the public visualize data collected by sensors on Orion and sent to the Mission Control Center at NASA’s Johnson Space Center in Houston.

The website is simple to navigate. You’ll see a visual representation of Artemis II’s progress, including its speed, distance from Earth and distance to the moon. Mobile app users get all of the above, along with an extra augmented reality tracker that lets you point your phone at the sky and see where Artemis II is relative to your position on Earth. It works much like Google Star Map and other stargazing apps that use similar technology.

According to NASA, tracking will be available once the Orion capsule separates from the rocket’s upper stage, which is expected about 3 hours after the upcoming April launch. The site will then update its information in real time for the entire 10-day mission.

NASA is also making flight data available for download so that people interested in creating their own content, such as visualizations or tracking apps, can do so. The data will include all sorts of things, including state vectors, which are data that «describe precisely where Orion is located and how it moves.» That same data will be used by NASA to study Orion and make improvements for future Artemis missions.

An exact launch date for Artemis II hasn’t been set, but the agency plans on launching the mission no earlier than April 1. The launch was originally scheduled for February, but it was delayed multiple times due to a hydrogen leak and a helium flow issue. NASA says it has since fixed both issues.

Technologies

Today’s NYT Connections Hints, Answers and Help for March 10, #1003

Here are some hints and the answers for the NYT Connections puzzle for March 10, No. 1,003

Looking for the most recent Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections: Sports Edition and Strands puzzles.

Today’s NYT Connections puzzle is a fun and diverse mix. If you know your US states, you’ll surely solve the blue category early. Read on for clues and today’s Connections answers.

The Times has a Connections Bot, like the one for Wordle. Go there after you play to receive a numeric score and to have the program analyze your answers. Players who are registered with the Times Games section can now nerd out by following their progress, including the number of puzzles completed, win rate, number of times they nabbed a perfect score and their win streak.

Read more: Hints, Tips and Strategies to Help You Win at NYT Connections Every Time

Hints for today’s Connections groups

Here are four hints for the groupings in today’s Connections puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: Think Julia Child.

Green group hint: Also, Bro and Sis.

Blue group hint: Minn. and Ore. are two others.

Purple group hint: Hit with your fist.