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 ...

HH 30 is a luminous region surrounding a newborn star, or protostar. The James Webb Space Telescope helped reveals unprecedented details of it.

“We [will be able to] move quickly and map out very large areas of the sky,” adds Josh Schlieder, the telescope’s wide-field ...

In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

Dark energy is still a mystery, but powerful new telescopes are set to uncover clues. With NASA and ESA leading the charge, ...

ESA/Webb, NASA & CSA, A. Leroy, J. Lee And The PHANGS Team ESA/Webb, NASA & CSA, L. Bradley (STScI), A. Adamo (Stockholm University) And The Cosmic Spring Collaboration ESA/Webb, NASA, CSA, K ...

Edwin Hubble seated at the 2.5-metre reflecting telescope at the Mount Wilson Observatory ... Wilson Observatory led to his discovery of the first Cepheid variable star, which established beyond ...

Astronomers also took closeup images of V1, the star that Hubble saw, showing it at its maximum and minimum brightness. Since its launch in 1990, the Hubble Space Telescope, which is about the ...

A hundred years ago, astronomer Edwin Hubble dramatically ... the new Hooker 100-inch telescope, at the time the largest in the world. He began taking photographic plates of the spiral nebulae. These ...

A hundred years ago, astronomer Edwin Hubble ... telescope, at the time the largest in the world. He began taking photographic plates of the spiral nebulae. These glass plates recorded images ...