The Milky Way is at least 100,000 light-years across, but the new results suggest that the galaxy's star formation takes ...

If our galaxy was in the middle of the Boötes void, we wouldn’t have known there were other galaxies until the 1960s.

As the telescopes revolutionize our understanding of the cosmos and our place within it, the stunning images that many of us ...

A light year is the distance light travels in one Earth year—about 9.46 trillion kilometers. Astronomers use it to simplify vast interstellar distances that would otherwise require unwieldy numbers.

A razor-thin spike of radio light, tuned to a wavelength of about 18 centimeters, just traveled more than 8 billion light-years and still arrived loud enough to stand out in MeerKAT’s data. That ...

Over millions of years, IC 486’s structure will continue to evolve as stars are born, age and fade, contributing to the ongoing story of galactic life. Original article source: Photos: Large luminous ...

Add Yahoo as a preferred source to see more of our stories on Google. Light can travel billions of years yet experience no time. Here’s how Einstein’s physics explains it. (CREDIT: Shutterstock) A ...

Add Yahoo as a preferred source to see more of our stories on Google. Two planets crashed into one another in a violent, chaotic collision that astronomers recently witnessed 11,000 light-years away ...

Scientists have traced a 3,000-light-year-long cosmic jet streaming out from the first black hole ever imaged to its likely source point with the help of "significantly enhanced coverage" from the ...

A researcher discovered the rare cosmic event by noticing strange dips in a star's brightness in old telescope data. The collision created a hot cloud of rocks and dust, which researchers detected ...