The mottled surface of Polaris

Astronomy & Observing News

See the Surface of Polaris, the North Star

New data from an array of telescopes has enabled astronomers to visualize the surface of the North Star, Polaris.

Spiral galaxy NGC 5468

Astronomy & Observing News

Webb Telescope Measures Universe’s Expansion

Astronomers have used the Webb telescope to observe Cepheid variable stars, ruling out one source of the prevailing "Hubble tension.”

Astronomy & Observing News

Milky Way: Young Stars in an Old Bulge

The presence of stars just 100 million years old in the Milky Way Galaxy’s central regions confirms our galaxy’s nonviolent past.