Related topics: black holes

Where is the center of the universe?

About a century ago, scientists were struggling to reconcile what seemed like a contradiction in Albert Einstein's theory of general relativity.

The importance of gravitational waves

In 2015, a piece of equipment at an observatory in the US moved one quintillionth (10-18) of a meter. This tiny movement was the first recorded event of gravitational waves. And it helped confirm Einstein's theory of general ...

Could dark matter be evolving over time, and not dark energy?

For a while now, there has been a problematic mystery at the heart of the standard cosmological model. Although all observations support the expanding universe model, observations of the early period of the cosmos give a ...

ACES finds its home in orbit

The Atomic Clock Ensemble in Space (ACES), ESA's state-of-the-art timekeeping facility, has been successfully installed on the International Space Station, marking the start of a new chapter in space-based precision science.

What rules actually prohibit us from building a warp drive?

In 1994, Miguel Alcubierre was able to construct a valid solution to the equations of general relativity that enable a warp drive. But now we need to tackle the rest of relativity: How do we arrange matter and energy to make ...

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