The measurements of these low-frequency gravitational waves align with predictions from Albert Einstein's theory of general relativity. These waves were first detected in 2015 by the Laser Interferometer Gravitational-Wave Observatory (LIGO), but NANOGrav's findings provide further confirmation of their existence.

By studying these gravitational waves, physicists hope to gain a deeper understanding of the dynamics of black holes and the nature of space-time itself. This discovery opens up new avenues for exploring the mysteries of the universe.

The James Webb Space Telescope has achieved a remarkable feat by capturing images of starlight emanating from two enormous galaxies hosting actively growing black holes, known as quasars. These quasars existed less than a billion years after the Big Bang, providing a glimpse into the early universe.

This groundbreaking achievement was made possible by the JWST's exceptional capacity to capture deep images, allowing scientists to isolate the light from the quasars and uncover the host galaxies. Previous observations of quasars from this era were hindered by their overwhelming brightness.

The immense size of the host galaxies of these ancient quasars is awe-inspiring. One of the galaxies measures 130 billion times the mass of the Sun, while the other measures 34 billion times the mass of the Sun. These colossal black holes and their host galaxies offer a glimpse into the fantastical world of cosmic evolution.

The ratio of black hole mass to host galaxy mass observed in these ancient quasars closely resembles that of galaxies in the more recent universe. This finding provides further support for our understanding of the growth and coevolution of supermassive black holes and their host galaxies.