The Hubble Space Telescope has provided the most detailed survey of the Andromeda galaxy, revealing new clues about its ...

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Despite its closeness to the Milky Way, the Andromeda galaxy appears six times the diameter of the full moon in the sky (as viewed from Earth), providing enough "celestial real estate" for Hubble's ...

Astrophotographers use sophisticated imaging technology to take and edit photographs that bring us the cosmos with startling ...

Astronomers everywhere will soon be peering through their telescopes for a celestial ‘planet parade’ that occurs just once every few decades.

Thursday, January 23, 2025: Astronomers announced last week that they had completed a decade-long, meticulous effort to assemble a full portrait of our neighboring galaxy, Andromeda. The result is ...

Astronomers have released the most detailed image of the Andromeda galaxy with new clues about its evolutionary history to celebrate the 100th anniversary of Edwin Hubble's discovery that our ...

Jan. 17, 2025 — The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous -- and highly debated -- results had shown: The Universe is expanding ...