An "annular eclipse" will be visible from a 240 to 300km-wide swathe of Earth stretching from Asia across the Pacific to the western US on Monday.

Vast Structure of Satellite Galaxies & Star Clusters Discovered Surrounding Milky Way --Nixes Existence of Dark Matter in Universe

For decades, cosmic theories have relied on dark matter — which exerts gravitational pull but emits no light — to be the hidden scaffolding that explains how structure arose in the Universe, how galaxies formed and how the rapidly spinning Milky Way manages to keep from flying apart.

If any of these worlds harbor either interesting prebiotic chemistry or even life, we’d obviously want to study it. And the surest possible way to eliminate that prospect is to introduce organisms from Earth as part of the process of accessing these environments.