New technology could unlock the secrets of the Moon’s past – Inverse

It’s hard to imagine scientists failing to examine every corner, crevice, crack, and any other measurable attribute of Moon rocks returned by Apollo missions in the 50 years those rocks have sat on Earth.

But just because humans have looked doesn’t mean all the Moon rocks on Earth have given up all their secrets.

In a new paper published Tuesday in Nature Communications, researchers from the University of Hawaii at Manoa detail how they used newly available sampling and analysis technologies to probe more deeply than ever before into a well-studied Apollo-era Moon rock sample known as Troctolite 76535. The new study suggests the cooling of the Moon from its once molten state was more complicated than scientists thought — and that we haven’t gotten close to exhausting all we can learn from lunar samples a half-century old.

What’s New?— Of the lunar samples brought home by Apollo missions, a subset known as the magnesian suite has been particularly helpful for lunar scientists.

“The magnesium suite is of interest because it contains these chemical characteristics that can sample all the key stages of lunar evolution,” William Nelson, a Ph.D. candidate in Earth sciences at the University of Hawaii and first author of the paper, tells Inverse. “By studying this suite, we can put constraints on several key stages of lunar evolution.”

The most widely accepted model of lunar evolution today is the Large Magma Ocean model, which holds that the Moon was once mostly molten, with the various types of rocks and minerals found there today crystallizing out of this magma ocean over time. The rocks of the magnesian suite, for instance, have been assumed to have crystallized over 100 million years.

The ordinary-yet-alien Troctolite 76535. NASA Johnson Space Center

By carefully examining the composition of Troctolite 76535 — a rock collected by the Apollo 17 mission — Nelson and his colleagues found that the distribution of chemicals such as phosphorus was too heterogeneous to support such a prolonged cooling period. Using computer modeling, they showed that phosphorus, for instance, would have been more evenly distributed throughout the samples if they had remained hotter than 150 degrees Celsius for more than 20 million years.

Rather than the magnesian suite rocks crystallizing from a largely molten crust, Nelson says, they now conclude that the magnesian suite originated as a magma infiltration of a then-largely solidified lunar crust. These rocks crystallized later than initially thought.

“Previously, you would have had the magnesium suite liquid starting to crystallize a little bit more than 4.4 billion years ago,” he says. “We were able to cut that down to more like 4.35 billion years ago.”

How they did it— While the new understanding of the magnesian suite is exciting for lunar scientists like Nelson, it doesn’t radically alter our understanding of how the Moon evolved. At least, not yet.

But how they made the discovery just might. Nelson made use of the University of Hawaii’s electron microprobe — an instrument not all that different from the scanning …….


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35 Obsolete Technology Things To Prove How Much The World Has Moved On And Changed – Bored Panda

All it takes is one good vintage image to make you stop and reminisce about your youth. That’s the power of a good photo—it opens the door to a deep yearning for the ‘good old days’ and reminds you of how things used to be. A simpler time and, arguably, a better one, too.

The ‘Retro Tech Dreams’ Twitter page hits hard with a heavy dose of nostalgia. The account documents and shares pics of vintage technology, computing, and the web that might strike a chord with those of you Pandas who were kids back in the ‘80s, ‘90s, and 2000s. As you continue scrolling, upvote the photos that got you daydreaming about your childhood.

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NIH launches intramural bioengineering center to foster technology collaboration across the agency –

News Release

Wednesday, January 25, 2023

NIH-wide resource will champion diversity, equity, inclusion and accessibility.

The National Institute of Biomedical Imaging and Bioengineering (NIBIB) has established the Center for Biomedical Engineering Technology Acceleration (BETA Center), a new intramural research program to solve a range of medicine’s most pressing problems. The BETA Center will serve the wider NIH intramural research program as a biotechnology resource and catalyst for NIH research discoveries.

The center will incorporate a focused engineering approach to accelerate the developm…….