Sometimes scientists must go to the ends of the earth, and even deep underground, to see the unseen! Join us and meet two charismatic researchers from the U-M Department of Physics who do just that. Bjoern Penning studies dark matter a mile underground in the former Homestake gold mine in Lead, South Dakota, using Lux-Zeplin, the world's most sensitive dark matter experiment. Marcelle Soares Santos contributed to the construction of the Dark Energy Camera on a mountaintop in Chile, one of the largest telescope cameras in the world, which she now employs to search for gravitational wave-emitting collisions of neutron stars and black holes. Bring your physics questions for this exciting conversation!