Extra stellar systems are so far away from our own that we couldn’t even hope of developing a tape measure long enough to determine how far away they really are. On the other hand, astronomers can ...

Pasadena, CA — Ohio State University researchers have found a way to measure distances to objects three times farther away in outer space than previously possible, by extending a common measurement ...

The cosmic distance ladder could soon have another rung. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In around 5 billion years, the sun will ...

The universe is a big place, and it’s hard to fathom the immense size given our finite ideas of distance here on Earth. Because of this, determining an answer for exactly “how big” is difficult.

The questions that kids ask about science aren’t always easy to answer. Sometimes, their little brains can lead to big places that adults forget to explore. With that in mind, we’ve started a series ...

NASA's Hubble Space Telescope spotted a blazing heat from a bright, lonely spiral galaxy called UGC 9391. But even though it lacks a companion, it serves as a guiding light for every astronomer who is ...

What is the nature of dark energy, a recently discovered dominant constituent of the universe today? Is expansion-accelerating dark energy an intrinsic property of space-time itself or rather a field ...