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Archive for the ‘space’ category: Page 77

Apr 28, 2024

CSIRO Telescope detects unprecedented Behaviour from Nearby Magnetar

Posted by in category: space

Researchers using Murriyang, CSIRO’s Parkes radio telescope, have detected unusual radio pulses from a previously dormant star with a powerful magnetic field.

New results published today in Nature Astronomy describe radio signals from magnetar XTE J1810-197 behaving in complex ways.

Magnetars are a type of neutron star and the strongest magnets in the Universe. At roughly 8,000 light years away, this magnetar is also the closest known to Earth.

Apr 27, 2024

Has The Future Already Happened?

Posted by in categories: futurism, space

In our latest video, “Has The Future Already Happened? Is the Universe Predetermined?” we embark on a cosmic journey that challenges the very fabric of our u…

Apr 27, 2024

Agile Space lands propulsion contract for U.S. Space Force mission

Posted by in categories: military, space

Join our newsletter to get the latest military space news every Tuesday by veteran defense journalist Sandra Erwin.

Under the agreement, Agile Space — based in Durango, Colorado — will supply the main engines, attitude control thrusters, propellant tanks, and other critical propulsion components for True Anomaly’s spacecraft.

Apr 27, 2024

Commercial space station module developer Gravitics wins Space Force contract

Posted by in category: space

Gravitics, which develops modules for commercial space stations, will work on tactically responsive space applications for the U.S. Space Force.

Apr 27, 2024

Space weather requires our attention now more than ever

Posted by in category: space

Solar Cycle 25 is about to hit its peak, making this an important time to increase space weather monitoring.

Apr 27, 2024

Russia vetoes U.N. resolution on nuclear weapons in space

Posted by in categories: geopolitics, military, space, treaties

WASHINGTON — Russia, as expected, vetoed April 24 a United Nations Security Council resolution crafted in response to reports that the country was developing a nuclear anti-satellite weapon.

Russia cast the only vote against the draft resolution that reaffirmed provisions in the Outer Space Treaty prohibiting the placement of nuclear weapons or other weapons of mass destruction in space. Thirteen other members of the Security Council voted in favor of the resolution while China abstained. As a permanent member of the Security Council, though, Russia’s vote acted as a veto preventing adoption of the resolution.

Japan and the United States drafted the Security Council resolution, which they billed as the first devoted to outer space issues. The resolution directed members to uphold Article 4 of the Outer Space Treaty, which forbids countries from placing nuclear weapons in orbit or on celestial bodies. It also called on countries not to develop nuclear weapons or other weapons of mass destruction specifically designed to be placed in orbit.

Apr 27, 2024

Review of electron emission and electrical breakdown in nanogaps

Posted by in categories: nanotechnology, space

With the continual miniaturization of electronic devices, there is an urgent need to understand the electron emission and the mechanism of electrical breakdown at nanoscale. For a nanogap, the complete process of the electrical breakdown includes the nano-protrusion growth, electron emission and thermal runaway of the nano-protrusion, and plasma formation. This review summarizes recent theories, experiments, and advanced atomistic simulation related to this breakdown process. First, the electron emission mechanisms in nanogaps and their transitions between different mechanisms are emphatically discussed, such as the effects of image potential (of different electrode’s configurations), anode screening, electron space-charge potential, and electron exchange-correlation potential. The corresponding experimental results on electron emission and electrical breakdown are discussed for fixed nanogaps on substrate and adjustable nanogaps, including space-charge effects, electrode deformation, and electrical breakdown characteristics. Advanced atomistic simulations about the nano-protrusion growth and the nanoelectrode or nano-protrusion thermal runaway under high electric field are discussed. Finally, we conclude and outline the key challenges for and perspectives on future theoretical, experimental, and atomistic simulation studies of nanoscale electrical breakdown processes.

Apr 26, 2024

New Evidence Found for Planet 9 with Konstantin Batygin

Posted by in category: space

Does Planet Nine exist? At 5 Sigma, Konstantin Batygin, Mike Brown, and others have found the best evidence yet of it’s existence.

Generation of Low-Inclination, Neptune-Crossing TNOs by Planet Nine.
https://arxiv.org/abs/2404.

Continue reading “New Evidence Found for Planet 9 with Konstantin Batygin” »

Apr 26, 2024

Orbiter Spots “Spiders” on Surface of Mars

Posted by in categories: materials, space

Imagine a real spider 3,300 feet across.


The European Space Agency’s Mars Express orbiter has spotted “spiders” on the Red Planet’s southern polar region.

But they’re not the arachnids we fear or adore back on Earth — they’re the result of a complex geological process that causes carbon dioxide to sublimate, digging up darker material from below the surface during the planet’s spring.

Continue reading “Orbiter Spots ‘Spiders’ on Surface of Mars” »

Apr 25, 2024

The Big Quantum Chill: NIST Scientists Modify Common Lab Refrigerator to Cool Faster With Less Energy

Posted by in categories: computing, quantum physics, space

From stabilizing qubits (the basic unit of information in a quantum computer) to maintaining the superconducting properties of materials and keeping NASA’s James Webb Space Telescope cool enough to observe the heavens, ultracold refrigeration is essential to the operation of many devices and sensors. For decades, the pulse tube refrigerator (PTR) has been the workhorse device for achieving temperatures as cold as the vacuum of outer space.

These refrigerators cyclically compress (heat) and expand (cool) high pressure helium gas to achieve the “Big Chill,” broadly analogous to the way a household refrigerator uses the transformation of freon from liquid to vapor to remove heat. For more than 40 years, the PTR has proven its reliability, but it is also power-hungry, consuming more electricity than any other component of an ultralow temperature experiment.

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