astronomy

A team using the Hobby-Eberly Telescope processed 600 million spectra to build the first large-scale intensity map of Lyman-alpha emissions from 9 to 11 billion years ago, exposing faint galaxies and intergalactic gas invisible to conventional surveys.

Six months of observations of the third interstellar object ever detected have uncovered water, methane, and hydrogen cyanide in its coma--and a Jupiter flyby on March 16 could yield the closest-ever look at an interstellar visitor.

A 15-hour JWST observation has produced the first three-dimensional map of Uranus's ionosphere, confirming decades-long atmospheric cooling and exposing how the planet's tilted, offset magnetic field sculpts complex auroral structures unlike any seen elsewhere in the solar system.

CDG-2, a near-invisible galaxy 300 million light-years away, is the first detected solely through its globular cluster population. Roughly 99% of its mass is dark matter.