special relativity

Avi Loeb says stars ejected by supermassive black holes travel so fast they essentially time travel, and they may make for great alien tourist destinations.

So Long!

Stars ejected by black hole mergers travel so fast that time starts to break down.

Specific Stars Are Effectively Time Traveling

The star S62 whips around the Milky Way's central black hole at a dizzying eight percent of lightspeed. It's so fast scientists can see time slow down.

It's Relative

At eight percent the speed of light, it's the fastest in our galaxy.

This Star Is Moving So Fast it Visibly Warps Spacetime

The science behind "the twins paradox" explained in just 3 minutes.

Watch: Would a Twin on Earth Really Age Faster Than One Traveling Through Space?

Special Relativity Simplified

special relativity

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