Category Astronomy/Space

Tumbleweed rover tests demonstrate transformative technology for low cost Mars exploration

Tumbleweed rover tests demonstrate transformative technology for low-cost Mars exploration
Field tests with the Tumbleweed Science Testbed in a quarry in Maastricht in April 2025. Credit: Team Tumbleweed/Sas Schilten

A swarm of spherical rovers, blown by the wind like tumbleweeds, could enable large-scale and low-cost exploration of the Martian surface, according to results presented at the Joint Meeting of the Europlanet Science Congress and the Division for Planetary Sciences (EPSC-DPS) 2025.

Recent experiments in a state-of-the-art wind tunnel and field tests in a quarry demonstrate that the rovers could be set in motion and navigate over various terrains in conditions analogous to those found on Mars.

Tumbleweed rovers are lightweight, 5-meter-diameter spherical robots designed to harness the power of Martian winds for mobility...

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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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