(Left) Predicted concretion diameter for different nucleation density scaling exponents α. For α ≤ 1, diffusion controls at the Mars dust grain size and predictions match observations (green band). For
(Left) Predicted concretion diameter for different nucleation density scaling exponents α. For α ≤ 1, diffusion controls at the Mars dust grain size and predictions match observations (green band). For
Pollux instrument concept schematic diagram. — astro-ph.IM Pollux is a candidate European instrument contribution to the Habitable Worlds Observatory (HWO), designed to advance our understanding of the formation and evolution
CH3OH/H2O column density ratio found in the literature for a wide range of clouds, YSOs and Solar System comets (see Sect 4.1 for the references). The values for molecular clouds,
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SpaceNews caught up with Rebecca Evernden, the recently appointed Director of the new UK Space Agency, at Space Comm Expo in London. This interview has been edited for brevity and
HELSINKI — China resumed orbital launch activity Thursday with a pair of missions lifting off from Hainan and Xichang spaceports, launching satellite internet and technology test satellites. The country had
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This image from the Copernicus Sentinel-1 mission shows us the maritime traffic passing through theØresund Strait in 2025. Zoom in or click on the circles to explore this image at






