A new academic paper from Dr. Slava Turyshev, posted to the arXiv preprint server, argues that the Solar Gravitational Lens (SGL) could be used to image objects far closer than distant exoplanets. The research stresses an often overlooked capability of the proposed mission: mapping white dwarfs and black holes within our cosmic neighborhood.
The SGL concept uses the Sun's gravity to magnify light, acting as a natural telescope. While much prior work focused on imaging exoplanets around other stars, Turyshev's latest paper suggests the technology is equally suited for studying compact, high-density remnants of stars.
According to the paper, the SGL could provide unprecedented resolution of white dwarfs and black hole event horizons. This would allow astronomers to observe surface details on white dwarfs or test theories of gravity near black holes—capabilities far beyond current instruments.
Turyshev has been prolific in publishing on the SGL, and this work addresses a key challenge: proving the mission's versatility to secure funding. Imaging stellar remnants would yield direct data on stellar evolution and extreme physics, from degenerate matter to spacetime curvature.
Critics might argue that the enormous technical hurdles—such as deploying a telescope at 550 AU from the Sun—make any SGL mission decades away, regardless of its scientific breadth.