Speedroo

How fast does the star S2 move near our galaxy's black hole?

17.1 million mphAbout 27.5 million km/h · Cosmic

About 17.1 million mph (7,650 km/s) at its closest, over 2.5% of the speed of light.

That's about 490,000 times a red kangaroo's top speed of about 35 mph (56 km/h).

17.1 million mph
the Sun's escape velocity

By speed: the star S2 is about 12× faster than the Sun's escape velocity.

Think you can guess? Play today's Speedroo

Things about as fast

Many real things vary, so we use a typical or official figure. Spotted a mistake? Email [email protected].