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This artist’s concept shows Betelgeuse’s companion star orbiting the red supergiant. The companion, which is orbiting clockwise from this point of view, generates a dense wake of gas that expands

View larger. | Artist’s concept of a rogue planet in the process of microlensing a more distant star. The foreground object bends the light from the distant star (peach-colored arcs),

This image shows the location of Cloud-9, which is 14 million light-years from Earth. The diffuse magenta is radio data from the ground-based Very Large Array (VLA), showing the presence

View larger. | In recent decades, we’ve come to understand most large galaxies as having central supermassive black holes. Our own galaxy, the Milky Way, has one. And the similarly

View larger. | Artist’s concept of scorching hot TOI-561 b and its sunlike star. New observations by NASA’s James Webb Space Telescope show there is a dense atmosphere on lava

In 2024, astronomers discovered the brightest Luminous Fast Blue Optical Transient (LFBOT) ever observed. LFBOTs are extremely bright flashes of blue light that shine for brief periods before fading away.

View larger. | Artist’s depiction of the interior of Uranus as either an ice giant (left) or rock giant (right). A new study suggests both Uranus and Neptune could be

Dwarf planet Ceres’ Occator crater in false color showing surface composition via NASA/ JPL-Caltech/ UCLA/ MPS/ DLR/ IDA. EarthSky’s 2026 lunar calendar is available now. Get yours today! Makes a

This artist’s animation shows a hypothesized event known as a superkilonova. First, the massive star ends its life in a supernova, generating elements like carbon and iron. In the aftermath,

NASA’s SPHEREx has mapped the entire sky in 102 infrared colors, which are invisible to the human eye but can be used to reveal different features of the cosmos. This