The universe

A relic galaxy has been uncovered from the early universe, revealing new clues about what our own Milky Way galaxy may have looked like back then.

The Event Horizon Telescope, which captured the first image of a black hole, has done it again. The Earth-sized telescope spotted an unexpected explosion from the same supermassive black hole.

Saturn's rings might not be younger than the dinosaurs as recently suggested, but nearly as old as the giant planet itself at billions of years in age, a new study says.

The last full moon of 2024 did not disappoint.

Astronomers modeled sunspot activity on a nearby red giant star to learn about its chaotic interior.

On Dec. 17, the moon and Mars will appear close together in the night sky in the Gemini constellation.

NASA has released a new document that highlights planned programmatic paradigm shifts in Mars exploration over the next 20 years.

Using NASA's Chandra X-ray telescope, astronomers witnessed a massive black hole jet slam into an unknown object in space.

By doubling the number of known "dark comets," astronomers have been able to split them into two camps depending on their location in the solar system.

A total of 50 nations have now joined NASA's efforts to establish peaceful and cooperative international space exploration.