Top 10 Roman Space Telescope science breakthroughs

image via New Scientist

August 28, 2026, 5:00 PM

• •The article says NASA's Nancy Grace Roman Space Telescope has launched and will survey the sky with a field of view about 100 times larger than Hubble's.
• •Roman is expected to improve measurements related to the Hubble constant, dark energy and the distribution of cosmic structure, including the sigma-eight tension.
• •The telescope could find up to 100,000 transiting exoplanets and around 1,000 additional planets through microlensing.
• •Microlensing observations may also reveal isolated black holes, neutron stars and rogue planets moving through the Milky Way.
• •Roman should aid multimessenger astronomy by helping locate afterglows from events such as neutron-star mergers and kilonovae.
• •The mission is also expected to map dark matter in the Milky Way and expand asteroseismology studies of stellar oscillations.

Scientific American outlines 10 major discoveries astronomers expect from NASA’s Nancy Grace Roman Space Telescope after its launch. The mission's wide field of view could sharpen measurements of the Hubble constant, test whether dark energy changes over time and help resolve puzzles in cosmic structure formation. Roman is also expected to greatly expand exoplanet discovery through both transits and microlensing while detecting isolated black holes, neutron stars and rogue planets. Beyond that, the telescope may strengthen multimessenger astronomy, map dark matter in the Milky Way, advance asteroseismology and reveal unanticipated phenomena.

Read original article