Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: space – Page 72

Physicists test quantum theory with atomic nuclei from a nuclear reaction

Many atomic nuclei have a magnetic field similar to that of Earth. However, directly at the surface of a heavy nucleus such as lead or bismuth, it is trillions of times stronger than Earth’s field and more comparable to that of a neutron star. Whether we understand the behavior of an electron in such strong fields is still an open question.

A research team led by TU Darmstadt at the GSI Helmholtz Center for Heavy Ion Research has now taken an important step toward clarifying this question. Their findings have been published in Nature Physics. The results confirm the .

Hydrogen-like ions, i.e., to which only a is bound, are theoretically particularly easy to describe. In the case of heavy nuclei with a high proton number—bismuth, for example, has 83 positively charged protons in its nucleus—the strong electrical attraction binds the electron close to the nucleus and thus within this extreme . There, the electron aligns its own magnetic field with that of the nucleus like a compass needle.

New Horizons observations lead to first Lyman-alpha map from the galaxy

The NASA New Horizons spacecraft’s extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at the galactic region surrounding our solar system. The findings are described in a new study authored by the SwRI-led New Horizons team.

The newly published research paper detailing the observations and their interpretation, “The Lyman-alpha Sky as Observed by New Horizons at 57 AU,” by R.G. Gladstone and co-authors appears in The Astronomical Journal.

“Understanding the Lyman-alpha background helps shed light on nearby galactic structures and processes,” said SwRI’s Dr. Randy Gladstone, the study’s lead investigator and first author of the publication. “This research suggests that hot interstellar gas bubbles like the one our is embedded within may actually be regions of enhanced hydrogen gas emissions at a wavelength called Lyman alpha.”

Lunar Space Station Module for NASA’s Artemis Campaign to Begin Final Outfitting

NASA continues to mark progress on plans to work with commercial and international partners as part of the Gateway program. The primary structure of HALO (Habitation and Logistics Outpost) arrived at Northrop Grumman’s facility in Gilbert, Arizona, where it will undergo final outfitting and verification testing.

HALO will provide Artemis astronauts with space to live, work, and conduct scientific research. The habitation module will be equipped with essential systems including command and control, data handling, energy storage, power distribution, and thermal regulation.

Following HALO’s arrival on April 1 from Thales Alenia Space in Turin, Italy, where it was assembled, NASA and Northrop Grumman hosted an April 24 event to acknowledge the milestone, and the module’s significance to lunar exploration. The event opened with remarks by representatives from Northrop Grumman and NASA, including NASA’s Acting Associate Administrator for Exploration Systems Development Lori Glaze, Gateway Program Manager Jon Olansen, and NASA astronaut Randy Bresnik. Event attendees, including Senior Advisor to the NASA Administrator Todd Ericson, elected officials, and local industry and academic leaders, viewed HALO and virtual reality demonstrations during a tour of the facilities.

Saturn’s moon Titan could harbor life, but only a tiny amount, study finds

Despite its uniquely rich inventory of organic molecules, Saturn’s largest moon, Titan, may be able to support only a minuscule amount of biomass, if life exists on the moon, according to a study using bioenergetic modeling.

Titan, Saturn’s largest moon, is a strange, alien world. Covered in rivers and lakes of liquid methane, icy boulders and dunes of soot-like “sand,” its topography has long fascinated scientists and invited speculation on whether lifeforms might lurk beneath the moon’s thick, hazy atmosphere.

An international team of researchers co-led by Antonin Affholder at the U of A Department of Ecology and Evolutionary Biology and Peter Higgins at Harvard University’s Department of Earth and Planetary sciences set out to develop a realistic scenario of what life on Titan might look like if it does exist, where it is most likely to occur and how much of it might be present.

“I Watched Time Slow Down in Orbit”: This ESA Clock Is Revolutionizing the Science of Space-Time Precision

IN A NUTSHELL 🚀 The ACES mission by the European Space Agency aims to redefine time measurement in space with unmatched precision. ⏱️ ACES will test Einstein’s theories of relativity by measuring how time bends, slows, and stretches under cosmic conditions. 🔬 Using advanced atomic clocks like PHARAO and SHM, ACES will explore fundamental constants

Fifteen new giant radio galaxies discovered with ASKAP

Using the Australian Square Kilometer Array Pathfinder (ASKAP), astronomers have discovered 15 new giant radio galaxies with physical sizes exceeding 3 million light years. The finding was reported in a research paper published April 9 on the arXiv preprint server.

The so-called giant radio galaxies (GRGs) have an overall projected linear length exceeding at least 2.3 million light years. They are rare objects grown usually in low-density environments and display jets and lobes of synchrotron-emitting plasma. GRGs are important for studying the formation and the evolution of radio sources.

ASKAP is a 36-dish radio-interferometer operating at 700 to 1,800 MHz. It uses to achieve extremely high survey speed, making it one of the best instruments in the world for mapping the sky at radio wavelengths. Due to its large field of view, high resolution, and good sensitivity to low-surface brightness structures, ASKAP has been essential in the search for new GRGs.

/* */