Ultra-faint dwarf galaxies – tiny satellite galaxies orbiting the Milky Way – have long been seen as cosmic fossils. Now, a new study published today in Monthly Notices of the Royal Astronomical Society uses an unprecedented set of simulations to show just how powerfully these faint systems can reflect the conditions of the early universe and tell us why some galaxies grew and others did not. They could also reveal what the universe's earliest 'climate' was like – for example, the level of radiation and how this impacted whether and where stars formed. Dwarf galaxies are often described as small cousins of the Milky Way. They form in small dark matter halos which are predicted by the standard model of cosmology. The faintest examples of such systems are extreme in both size and fragility, and lie on the boundary of our knowledge about galaxy formation and dark matter.

As space agencies and private companies look toward sustained human presence on the moon, a fundamental challenge centers on how to build strong, durable infrastructure without hauling every material from Earth. New research from Rice University points to an unexpected solution — transforming one of the moon’s most stubborn obstacles, its abrasive dust, into a valuable building resource.

The harsh environmental conditions and the vast distance for transportation present significant challenges to ensuring a stable resource supply for human activities on Mars. Utilizing in-situ Martian air as the working medium for energy transfer and material conversion, coupled with advanced thermodynamic cycles and chemical processes, could offer an innovative path to build sustainable energy station on Mars. This perspective highlights the key role of Martian atmosphere in multimodal resource conversion. Researchers propose a design framework for future in-situ Martian energy systems, analyze the implementation pathways and current status of resource conversion, and demonstrate its potential to reduce rocket payload costs through thermodynamic analysis. Finally, they summarize the future challenges and directions in the field of multimodal resource conversion on Mars.