When white dwarfs—the hot remnants of stars like our sun—are orbited closely by another star, they sometimes steal mass away ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

Dennis Mammana Stargazers We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to comprehend sizes and ...

Now the diameter of the known universe can be described as 558 billion trillion miles (that’s 558 followed by 21 zeros) or 28 gigaparsecs. If you’re like most astronomers, I’m pretty sure which size ...

Harvard physicist Avi Loeb revealed that the object is expected to approach Earth on December 17, speeding through the solar ...

We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to ...

When white dwarfs-the hot remnants of stars like our Sun-are orbited closely by another star, they sometimes steal mass away from their companion. The ...

(One astronomical unit, or AU, is the average Earth-Sun distance of 93 million miles or 150 million km.) Shortly after its discovery, the Minor Planet Center issued an alert for additional ...