Summary:

- NASA's Roman Space Telescope, scheduled for launch in the mid-2020s, is expected to help solve a cosmic mystery about the expansion of the universe.
- The telescope will map the distribution of dark matter and observe distant galaxies, which could provide insights into dark energy, the mysterious force driving the accelerating expansion of the universe.
- Researchers hope the Roman Space Telescope's observations will help refine our understanding of the nature of dark energy and potentially uncover new physics beyond the current standard model of cosmology.