Category Astronomy/Space

Atmospheric Pressure Changes could be Driving Mars’ Elusive Methane Pulses

2024-01-24
New simulations are helping inform the Curiosity rover’s ongoing sampling campaign. Credit:NASA/JPL-Caltech/MSSS

Simulations will help Curiosity search for signs of past or present life on the Red Planet. New research shows that atmospheric pressure fluctuations that pull gases up from underground could be responsible for releasing subsurface methane into Mars’ atmosphere; knowing when and where to look for methane can help the Curiosity rover search for signs of life.

“Understanding Mars’ methane variations has been highlighted by NASA’s Curiosity team as the next key step towards figuring out where it comes from,” said John Ortiz, a graduate student at Los Alamos National Laboratory who led the research team.

“There are several challenges associated with meeting that goal, an...

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Records of Cometary Dust Hitting the Asteroid Ryugu

A carbonaceous material found in the melt splash. The carbonaceous material shows spongy texture and contains small iron sulfide inclusions. This is similar to the primitive organic matters found in cometary dust. ©Megumi Matsumoto et al.

The Hayabusa2 mission that collected samples from the asteroid Ryugu has provided a treasure trove of insights into our solar system. After analyzing samples further, a team of researchers have unearthed evidence that cometary organic matter was transported from space to the near-Earth region.

Ryugu is a near-Earth asteroid that gained significant attention when the Japanese Hayabusa2 mission collected samples and returned them to Earth...

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New research sheds light on a Phenomenon known as ‘False Vacuum Decay’

Image of the Universe
Vacuum decay is thought to play a central role in the creation of space, time and matter in the Big Bang, but until now there has been no experimental test
 
Professor Ian Moss

An experiment conducted in Italy, with theory support from Newcastle University, has produced the first experimental evidence of vacuum decay.

In quantum field theory, when a not-so-stable state transforms into the true stable state, it’s called “false vacuum decay.” This happens through the creation of small localised bubbles.

While existing theoretical work can predict how often this bubble formation occurs, there hasn’t been much experimental evidence.

Now, an international research team involving Newcastle University scientists has for the first observed these bubbles forming in carefully controlled a...

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Salad in Space? New Research says it’s Not a Healthy Choice

Salad in space? New study says it's not a healthy choice
Researchers at the University of Delaware are looking at how plants grown in space are more prone to infections of Salmonella compared to plants not grown in space or grown under gravity simulations. Credit: Evan Krape / University of Delaware

Salad in space? New research says it’s not a healthy choice. It’s been more than three years since the National Aeronautics and Space Administration made space-grown lettuce an item on the menu for astronauts aboard the International Space Station. Alongside their space diet staples of flour tortillas and powdered coffee, astronauts can munch on a salad, grown from control chambers aboard the ISS that account for the ideal temperature, amount of water and light that plants need to mature.

But there is a problem...

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