A small blue dwarf galaxy passed through the massive Bullseye galaxy. This impact created nine rings of new stars.

NASA’s Hubble Space Telescope has captured a breathtaking and unprecedented sight in deep space—a galaxy rippling with nine ...

After passing through its New phase last week, the Moon is now a thin waxing crescent some 8 percent lit by sunset this ...

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

which established beyond any doubt that M31 was a separate galaxy from our own. Shown here are three images of Plate H335H as well as three images of a similar plate, H331H, which Hubble took the ...

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

The Andromeda nebula, M31, was a prominent example. It's visible to the naked eye from a dark site ... he noticed that the light was always shifted to longer or redder wavelengths. Light from the ...

That's because when the solar particles interact with Earth's magnetosphere, the powerful eruption should make the vibrant northern lights visible ... locations free from light pollution so ...

also called M31, was nearly a million light years away – too remote to be a part of the Milky Way. Hubble’s work opened the door to the study of the universe beyond our galaxy. In the century since ...

At a meeting of the American Astronomical Society in January 1925, a paper read by one of his colleagues on his behalf reported that the Andromeda nebula, also called M31, was nearly a million ...

“We’ll also be able to see the Andromeda Galaxy (M31), the closest major galaxy to our own and visible as a faint smudge to the naked eye in dark skies. “I say close, it’s 2.5 million light-years away ...