The SpaceX Falcon 9 rocket is the vehicle that brings satellites, Dragon cargo spacecraft and Crew Dragon spacecraft to orbit.
Among its many uses, SpaceX regularly launches Falcon 9 to bring its Dragon spacecraft to the International Space Station. Dragon made the first private spacecraft visit ever there in October 2012 and has run more than 25 cargo missions in the years since. Since 2020, SpaceX also used Falcon 9 for crewed missions to the ISS, on behalf of NASA and other customers.
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Northwestern University researchers have developed the first physics-based metric to predict whether or not a person might someday suffer an aortic aneurysm, a deadly condition that often causes no symptoms until it ruptures.
In the new study, the researchers forecasted abnormal aortic growth by measuring subtle “fluttering” in a patient’s blood vessel. As blood flows through the aorta, it can cause the vessel wall to flutter, similar to how a banner ripples in the breeze. While stable flow predicts normal, natural growth, unstable flutter is highly predictive of future abnormal growth and potential rupture, the researchers found.
Called the “flutter instability parameter” (FIP), the new metric predicted future aneurysm with 98% accuracy on average three years after the FIP was first measured. To calculate a personalized FIP, patients only need a single 4D flow magnetic resonance imaging (MRI) scan.
Galactic winds enable the exchange of matter between galaxies and their surroundings. In this way, they limit the growth of galaxies, that is, their star formation rate. Although this had already been observed in the local universe, an international research team led by a CNRS scientist1 has just revealed — using MUSE, 2 an instrument integrated into the European Southern Observatory’s (ESO) Very Large Telescope — the existence of the phenomenon in galaxies which are more than 7 billion years old and actively forming stars, the category to which most galaxies belong.
The team’s findings, to be published in Nature on 6 December 2023, thus show this is a universal process.
Galactic winds are created by the explosion of massive stars.
If you want to improve the output of solar energy systems, why not also run them at night? That’s the question researchers in Qatar and Jordan addressed as they successfully devised a system that promises to more than double energy output of current solar power stations.
By combining two concepts—a solar updraft system and a cooling downdraft structure—researchers designed a model that could generate 753 MWh of energy annually. That’s enough to power roughly 753 homes for about five weeks or 1,500 60-watt light bulbs nonstop for a year.
The origins of the system, referred to as Solar Tower Power Plant, go back to 1982 when Spanish engineers constructed a chimney-like tower with a mechanical turbine at its base. Air within the tower was warmed by absorbing solar radiation, similar to a greenhouse. As the air heated, it created an updraft that rose and activated wind turbines that in turn generated electricity.
A protein in the immune system programmed to protect the body from fungal infections is also responsible for exacerbating the severity of certain autoimmune diseases such as irritable bowel disease (IBS), type 1 diabetes, eczema and other chronic disorders, new research from The Australian National University (ANU) has found.
The discovery could pave the way for new and more effective drugs, without the nasty side effects of existing treatments. In addition to helping to manage severe autoimmune conditions, the breakthrough could also help treat all types of cancer. The work has been published in Science Advances.
The scientists have discovered a previously unknown function of the protein, known as DECTIN-1, which in its mutated state limits the production of T regulatory cells or so-called ‘guardian’ cells in the immune system.
NASA’s Cassini probe has uncovered compelling evidence hinting at the potential existence of life on Saturn’s icy moon Enceladus.
Interestingly, a detailed review of Cassini’s data has revealed that the subsurface ocean hidden beneath the moon’s frozen surface is a rich source of chemical energy.
This disclosure strengthens the case for exploring the possibility of life within the ocean of this frozen celestial body.
Continue reading “Saturn’s icy moon hosts vital life source, key molecule, reveals NASA” »
No one has yet managed to travel through time – at least to our knowledge – but the question of whether or not such a feat would be theoretically possible continues to fascinate scientists.
As movies such as The Terminator, Donnie Darko, Back to the Future and many others show, moving around in time creates a lot of problems for the fundamental rules of the Universe: if you go back in time and stop your parents from meeting, for instance, how can you possibly exist in order to go back in time in the first place?
It’s a monumental head-scratcher known as the ‘grandfather paradox’, but a few years ago physics student Germain Tobar, from the University of Queensland in Australia, worked out how to “square the numbers” to make time travel viable without the paradoxes.
We’ve long assumed that aliens will be like us, but there’s every reason to think they are instead a form of unfathomable AI, says the UK astronomer royal Lord Martin Rees.
NASA has awarded Blue Origin a $35 million contract to further develop a technology that creates solar cells out of lunar regolith — the dust and crushed rock blanketing the moon’s surface.
“[W]e’re inspired and humbled to receive this investment from NASA to advance our innovation,” said Pat Remias, VP of Blue Origin’s Capabilities Directorate. “First we return humans to the moon, then we start to ‘live off the land.’”
Moon or bust: NASA plans to send astronauts to the moon again as soon as 2025, with the goal of establishing a long-term presence on the lunar surface soon after. For that to work, it’s going to need a way to provide astronauts with a steady supply of everything they need to survive and thrive, from food and water to oxygen and electricity.
