XL-Calibur, a research balloon the size of a football stadium, recently passed over Nunavut and the Northwest Territories studying black holes in the galaxy. Parts of it landed near Délı̨nę, N.W.T., on Monday.
XL-Calibur, a research balloon the size of a football stadium, recently passed over Nunavut and the Northwest Territories studying black holes in the galaxy. Parts of it landed near Délı̨nę, N.W.T., on Monday.