Category Astronomy/Space

One Small Grain of Moon Dust, One Giant Leap for Lunar Studies

Moon surface (stock image; elements furnished by NASA). | Credit: (c) Infinity Nostalgia / stock.adobe.com
Moon surface (stock image; elements furnished by NASA).
Credit: © Infinity Nostalgia / Adobe Stock

Scientists have found a new way to analyze the chemistry of the moon’s soil using a single grain of dust brought back by Apollo 17 astronauts in 1972. Their technique can help us learn more about conditions on the surface of the moon and formation of precious resources like water and helium there.

Back in 1972, NASA sent their last team of astronauts to the Moon in the Apollo 17 mission. These astronauts brought some of the Moon back to Earth so scientists could continue to study lunar soil in their labs. Since we haven’t returned to the Moon in almost 50 years, every lunar sample is precious. We need to make them count for researchers now and in the future...

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Astronomers reveal rare Double Nucleus in nearby ‘Cocoon Galaxy’

Allen Lawrence, a 77-year-old who earned an Iowa State master’s degree in astrophysics in 2018, is first author of a paper revealing a rare double-nucleus structure in a well-known, nearby galaxy. Larger photo. Photo by Christopher Gannon.

The so-called “Cocoon Galaxy” not only has a unique shape, it has a rare double-nucleus structure, astronomers report in a new paper.

After studying data from optical and radio telescopes based on the ground and in space, a team of astronomers determined that a galaxy known as NGC 4490 (and nicknamed the “Cocoon Galaxy” because of its shape) has “a clear double nucleus structure,” according to their paper.

One nucleus can be seen in optical wavelengths. The other is hidden in dust and can only be seen in infrared and radio wavelengths.

The...

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Astronomers discover Unusual Monster Galaxy in the Very Early Universe

The three panels show, from top to bottom, what XMM-2599’s evolutionary trajectory might be, beginning as a dusty star-forming galaxy, then becoming a dead galaxy, and perhaps ending up as a “brightest cluster galaxy,” or BCG. (NRAO/AUI/NSF/B. Saxton; NASA/ESA/R. Foley; NASA/StScI)

An international team of astronomers led by scientists at the University of California, Riverside, has found an unusual monster galaxy that existed about 12 billion years ago, when the universe was only 1.8 billion years old.

Dubbed XMM-2599, the galaxy formed stars at a high rate and then died. Why it suddenly stopped forming stars is unclear.

“Even before the universe was 2 billion years old, XMM-2599 had already formed a mass of more than 300 billion suns, making it an ultramassive galaxy,” ...

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Pluto’s Icy Heart Makes Winds Blow

Four images from NASA’s New Horizons’ Long Range Reconnaissance Imager (LORRI) were combined with color data from the Ralph instrument to create this global view of Pluto.
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.

A “beating heart” of frozen nitrogen controls Pluto’s winds and may give rise to features on its surface, according to a new study.

Pluto’s famous heart-shaped structure, named Tombaugh Regio, quickly became famous after NASA’s New Horizons mission captured footage of the dwarf planet in 2015 and revealed it isn’t the barren world scientists thought it was.

Now, new research shows Pluto’s renowned nitrogen heart rules its atmospheric circulation...

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