Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time: the interwoven fabric of space and time at the heart of Albert Einstein’s theory of relativity.

What are the premises of Big Bang theory?In modern cosmology, it is believed that the universe has been expanding from a hot, ...

DESI and DES studied dark energy. Together, what can they tell us? Last year, DESI made headlines when its map of the Universe suggested dark energy, the force driving cosmic expansion, might not be ...

NASA is about to launch a space observatory that could help settle some of the biggest mysteries in modern astronomy. The Nancy Grace Roman Space Telescope will study how the universe began, what it ...

Let's move on to the second half of our discussion about the universe.In the first half, we looked at galaxies in the early ...

Two blind spots torture physicists: the birth of the universe and the center of a black hole. The former may feel like a moment in time and the latter a point in space, but in both cases the normally ...

Here’s what you’ll learn in this story: Time might actually have 3 dimensions. But it also means that the space would actually be one-dimensional, instead of the three dimensions we’re familiar with.

Contemporary physics has learned to describe the universe with unprecedented precision. Yet when it tries to say what time is, it stumbles again and again. Perhaps the problem lies not only in the ...

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

An "extraordinary" signal from outer space has provided new insight into the formation of the universe. Astronomers pinpointed the source of the powerful flash of radio waves that had traveled for ...