Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

The James Webb Space Telescope has changed the game for planet hunters. Recent readings found what look like the first clues ...

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

These types of objects are usually so reliable they are compared to atomic clocks, so an extreme exception needs to be ...

A powerful new telescope in outback Australia has mapped vast areas of the universe in record-breaking time, revealing a million new galaxies and opening the way to new discoveries, the country's ...

Harvard astronomer Avi Loeb currently says there is a 30-40 percent chance the object is not natural in origin.

So how many stars are there? Given all of the above, astronomers estimate that the Milky Way contains around 100 billion stars, and there are at least 100 billion galaxies in the observable universe.

The size of the universe depends on its shape, with possibilities ranging from finite and spherical to flat or even infinite.

By listening for ghostly radio echoes from the early Universe, scientists believe future Moon missions could determine what ...

Astronomers using the James Webb Space Telescope may have found the universe’s first “dark stars.” Within the first few ...