Category Astronomy/Space

Lightest Black Hole or Heaviest Neutron Star? MeerKAT Uncovers a Mysterious Object in Milky Way

An artist’s impression of the system assuming that the massive companion star is a black hole. The brightest background star is its orbital companion, the radio pulsar PSR J0514-4002E. The two stars are separated by 8 million km and circle each other every 7 days.
Credit: Daniëlle Futselaar (artsource.nl)

An international team of astronomers have found a new and unknown object in the Milky Way that is heavier than the heaviest neutron stars known and yet simultaneously lighter than the lightest black holes known.

Using the MeerKAT Radio Telescope, astronomers from a number of institutions including The University of Manchester and the Max Planck Institute for Radio Astronomy in Germany found an object in orbit around a rapidly spinning millisecond pulsar located around 40,000 ligh...

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Mars Express finds Evidence of Large Water Deposit at the Medusae Fossae Formation

This map shows the estimated amount of ice within the mounds that form the MFF, indicating that the ice-rich deposits are up to 3000 m thick. Credit: Planetary Science Institute/Smithsonian Institution

Windswept piles of dust, or layers of ice? ESA’s Mars Express has revisited one of Mars’s most mysterious features to clarify its composition. Its findings suggest layers of water ice stretching several kilometers below ground—the most water ever found in this part of the planet.

Over 15 years ago, Mars Express studied the Medusae Fossae Formation (MFF), revealing massive deposits up to 2.5 km deep. From these early observations, it was unclear what the deposits were made of—but new research now has an answer.

“We’ve explored the MFF again using newer data from Mars Express’s M...

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Moon Rocks with Unique Dust found

The meter-high rocks discovered in the work are located near the Reiner K crater in the “Reiner Gamma” region, which has a magnetic anomaly.

The moon is almost completely covered in dust. Unlike on Earth, this dust is not smoothed by wind and weather, but is sharp-edged and also electrostatically charged. This dust has been studied since the Apollo era at the end of the 1960s. Now, an international research team led by Dr. Ottaviano Rüsch from the University of Münster has for the first time discovered anomalous meter-sized rocks on the lunar surface that are covered in dust and presumably exhibit unique properties—such as magnetic anomalies.

The scientists’ most important finding is that only very few boulders on the moon have a layer of dust with very special reflective proper...

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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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