This Hubble image features a massive cluster of brightly glowing galaxies, first identified as Abell 3192. Like all galaxy clusters, this one is suffused with hot gas that emits powerful X-rays, and it is enveloped in a halo of invisible dark matter. All this unseen material – not to mention the many galaxies visible in this image […]
The first image from the new James Webb Space Telescope, the largest and most powerful space telescope ever launched, was revealed by President Joe Biden today.