the universe is infinite or finite, but it is believed that the universe is expanding based on observational records. If the universe is already infinite, what does it mean for it to expand further?

It is known that the universe is constantly expanding at a speed faster than the speed of light, and it is said that human beings cannot reach the end of the universe, and experts are divided on ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of the universe to its utmost limits, we can finally, confidently say that the ...

This 2D “slice” of the universe shows the distribution of some 200,000 galaxies — each represented by a dot — over an angle of about 90° on the sky. Each galaxy’s distance, or redshift, is translated ...

Is the universe really limited to just four dimensions — length, width, height, and time? For nearly a century, theoretical physicists have been exploring a mind-bending idea: that reality might ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter. The biggest objects in the universe are clusters ...