Category Astronomy/Space

Mysterious moon rust explained by oxygen coming from Earth’s ‘wind’

Mysterious moon rust explained by oxygen coming from Earth's
The chemical and microstructure characteristics of O-irradiated magnetite (Mag) after H-implantation. Credit: Geophysical Research Letters (2025). DOI: 10.1029/2025gl116170

In 2020, scientists reported the detection of hematite, an iron oxide mineral otherwise known as rust, distributed through the higher latitudes of the moon, particularly on the nearside. This came as a surprise, considering the low concentrations of oxygen—which is required for the formation of rust—on the moon. Researchers proposed several theories to account for the origins of the oxygen in moon rust, including the degassing of volatiles from lunar magma, asteroids, comets, or large impact events.

However, the only explanation that could account for the distribution patterns of the hematite was that oxyge...

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Astronomers pinpoint the location of the brightest fast radio burst to date

Artist’s rendition of CHIME/FRB and its Outriggers localizing FRB 20250316A/ RBFLOAT.
Artist’s rendition of CHIME/FRB and its Outriggers localizing FRB 20250316A/ RBFLOAT. Inset: The host galaxy (NGC 4141) as imaged by MMT Observatory (PI: Yuxin (Vic) Dong), illustrating the location of the FRB within a spiral arm of NGC 4141.Photo credit: Daniëlle Futselaar/MMT Observatory.

An international collaboration of astronomers, including researchers from the University of Toronto, have detected the brightest Fast Radio Burst (FRB) to date—and have been able to pinpoint its location in a nearby galaxy by using a network of radio telescopes.

FRBs are extremely energetic flashes from distant sources from across the universe that are caused by extreme astrophysical phenomena...

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Chandra finds black hole that’s growing at 2.4 times the Eddington limit

An artist's concept of a supermassive black hole, a surrounding disk of material falling towards the black hole and a jet containing particles moving away at close to the speed of light. This black hole represents a recently-discovered quasar powered by a black hole. New Chandra observations indicate that the black hole is growing at a rate that exceeds the usual limit for black holes, called the Eddington Limit. Credit: NASA/CXC/SAO/M. Weiss
An artist’s concept of a supermassive black hole, a surrounding disk of material falling towards the black hole and a jet containing particles moving away at close to the speed of light. This black hole represents a recently-discovered quasar powered by a black hole. New Chandra observations indicate that the black hole is growing at a rate that exceeds the usual limit for black holes, called the Eddington Limit. Credit: NASA/CXC/SAO/M. Weiss
X-ray: NASA/CXC/INAF-Brera/L. Ighina et al.; Illustration: NASA/CXC/SAO/M. Weiss; Image Processing: NASA/CXC/SAO/N. Wolk

A black hole is growing at one of the fastest rates ever recorded, according to a team of astronomers...

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Galaxies Reveal Hidden Maps of Dark Matter in the Early Universe

Rutgers researchers uncover “fingerprints” that show how these cosmic systems expand and evolve

A Rutgers-led team of scientists has uncovered evidence of how galaxies expand by tracing the invisible scaffolding of the universe created by a mysterious substance known as dark matter.

In a newly published study in Astrophysical Journal Letters, researchers used what they said are the largest-ever samples of special galaxies called Lyman-alpha emitters to study how galaxies clumped together over billions of years. In doing so, they gained an improved understanding of how galaxies relate to the surrounding dark matter and how they evolve over time.

“Analyzing these fingerprints gives us insight into the mass of dark matter surrounding the galaxies,” said Eric Gawiser, a Disti...

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