moon tagged posts

The Moon Turned Itself Inside Out, Scientists Confirm

Small Bang
Scientists seem to have figured out why the Moon is made up of such weird and heavy rocks: way back in the day, it turned itself inside out.

For decades now, scientists have pretty much agreed that the Moon formed from debris that flew off the young Earth when another planet smashed into it about 4.5 billion years. That cosmic wreckage “coalesced, cooled and solidified” to form the Moon as we know it today, researchers from the University of Arizona’s Lunar and Planetary Laboratory wrote in a press release — but what happened next is something of a “choose-your-own adventure,” as the scientists describe it.

In a new paper published in the journal Nature Geoscience, the LPL researchers found that the surprisingly high concentration of titanium found in Moon rocks, suc...

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The Metalens meets the Stars – Large, All-glass Metalens Images Sun, Moon and Nebulae

image of the metalens and camera
This 10-centimeter-diameter glass metalens can image the sun, the moon and distant nebulae with high resolution. (Credit: Capasso Lab/Harvard SEAS)
 

Metalenses have been used to image microscopic features of tissue and resolve details smaller than a wavelength of light. Now they are going bigger.

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a 10-centimeter-diameter glass metalens that can image the sun, the moon and distant nebulae with high resolution.

It is the first all-glass, large-scale metalens in the visible wavelength that can be mass produced using conventional CMOS fabrication technology.

The research is published in ACS Nano.

“The ability to accurately control the size of tens of billions of nanopill...

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New Findings Suggest Moon may have Less Water than Previously Thought

Graph with colored patches showings the extent of PSRs 3.3 billion years ago (red), 2.1 billion years ago (green) and close to present-day (blue) with current topography
Courtesy of Schörghofer/Rufu The scientists used AstroGeo22 and LOLA height measurements to calculate the age of the Moon’s permanently shadowed regions near its poles. Colored patches show the extent of PSRs 3.3 billion years ago (red), 2.1 billion years ago (green) and close to present-day (blue) with current topography. These findings suggest that current estimates for cold-trapped ices are too high.

Moon’s permanently shadowed regions are younger than previously estimated. A team including Southwest Research Institute’s Dr. Raluca Rufu recently calculated that most of the Moon’s permanently shadowed regions (PSRs) are at most around 3.4 billion years old and can contain relatively young deposits of water ice...

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Moon Glows Brighter than Sun in Images from NASA’s Fermi

These images show the steadily improving view of the Moon’s gamma-ray glow from NASA’s Fermi Gamma-ray Space Telescope. Each 5-by-5-degree image is centered on the Moon and shows gamma rays with energies above 31 million electron volts, or tens of millions of times that of visible light. At these energies, the Moon is actually brighter than the Sun. Brighter colors indicate greater numbers of gamma rays. This image sequence shows how longer exposure, ranging from two to 128 months (10.7 years), improved the view.
Credit: NASA/DOE/Fermi LAT Collaboration

If our eyes could see high-energy radiation called gamma rays, the Moon would appear brighter than the Sun! That’s how NASA’s Fermi Gamma-ray Space Telescope has seen our neighbor in space for the past decade...

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