Explanation: What a sight to behold, when a night sky became filled with colors that appeared to rain over the Skógafoss waterfall in Iceland. This image was taken in a single 5 second exposure by the photographer in April 2025. Seeing an aurora is on many people’s bucket lists. But it is not easy. It requires high solar activity, dark
Pangenome reference The pangenome reference used in this study is a sequence graph augmented with phased small variants. It is stored in two data files: a sequence graph in reference rGFA format16 containing the structural variants and a supplementary phased VCF33 file containing small variants. The rGFA sequence graph is constructed first from haplotype assemblies,