The James Webb Space Telescope has confirmed its first exoplanet, a rocky Earth-size planet, and attempted to take the measure of its atmosphere.
Images and spectra from the James Webb Space Telescope suggest that the first galaxies in the universe are too many or too bright compared to what astronomers expected.
A new deep field from the James Webb Space Telescope shows how galaxies evolved in the early universe.
Polarized X-rays are helping astronomers take a closer look at blazars’ “plasma guns,” the particle jets powered by supermassive black holes.
A riot of colors in this James Webb Space Telescope infrared image show the warm glow of a feeding infant star, representing a look back in time at a star very like the Sun.
While the NSF plans to establish an educational center at the Arecibo Observatory, the institution has stated it will not fund science there.
An innovative method enables astronomers to gauge the size and shape of a distant asteroid — and potentially any km-scale object in the solar system.
Three solar system emissaries have returned beautiful and even interactive vistas of Neptune, Jupiter, and Mars.