In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...

So how well do you know the Milky Way? Let's test your knowledge of our galaxy's size, age, speed and more with the 15 ...

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

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside ...

Recent studies challenge the long-held belief that the Milky Way is a standard model for understanding galaxy formation, ...

Astronomers have achieved a groundbreaking feat by capturing the first clear image of a star in another galaxy. This ...

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

A radio telescope in South Africa has unearthed a giant galaxy—dubbed a "cosmic megastructure"—with plasma jets that measure ...

Radio galaxies already feature mind-bending physics, with supermassive black holes accreting matter at the galactic core and sending out vast plasma jets that glow at radio frequencies. Those larger ...

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

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

Astro Tourism is the travel trend you didn’t know you needed. As 6 planets align in February 2025, here are best spots to watch the rare event in Saudi Arabia.