In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

The Hubble Space Telescope completes a high-resolution portrait of our galaxy's gorgeous neighbor, which will help scientists better understand our Milky Way.

High radiation during a time of frenzied star formation in the Milky Way left one stellar population with few chances to form planets, a study reports.

Two stars in Wolf-Rayet 140 collide, forming carbon-rich dust. Webb captured 17 expanding dust shells, revealing ...

Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way.

Astronomers have unveiled surprising new details about a small galaxy, NGC 300, challenging existing theories on galaxy ...

The Gaia mission of the European Space Agency (ESA) has officially ceased its scientific operations after 12 years of service ...

Soon, the Gaia spacecraft will leave orbit and begin its retirement in the depths of space. In the last 10 years, it has ...

But researchers have used the James Webb Space Telescope, a collaboration of NASA and its European and Canadian space ...

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have long been thought to lack the heft to attract mass and grow in the same way.

BAE Systems built both the spacecraft bus and telescope for the observatory, in addition to leading spacecraft integration ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda Galaxy. The team includes several UC Santa Cruz researchers who made significant ...