# Breakneck star orbits black hole at record speed

The ESA's XMM-Newton has turned up a star and black hole, separated by around a million kilometres, orbiting each other in just 2.4 hours. The pair outstrips the previous record of 3.2 hours for an orbit, held by Swift J1753.5-0127. The speed at which each of the two objects move is pretty impressive. Since they orbit a common …

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#### "out of thew [sic] main disk of the galaxy."

Way to spell-check there guys.

And would it be so hard to say "more than 2 million km/h (0.2% of the speed of light)"?

#### Re: "out of thew [sic] main disk of the galaxy."

The speed of light... where? And even if written compared to c (which I assume you meant), did it give you any information you didn't already have?

#### Re: "out of thew [sic] main disk of the galaxy."

that's an Olympic swimming pool full of usain bolts

#### Re: "out of thew [sic] main disk of the galaxy."

Or a mere sink full of Lance Armstrong's pee.

#### @David D. Hagood

'And would it be so hard to say "more than 2 million km/h (0.2% of the speed of light)"?'

But then you'd miss the chance to show that you can do the calculation and awe us all with an especially pointless example of pedantry. Applause, applause, applause ...

#### That's quick..

As a measurement of speed in time I would call that

'A reasonable working day, for a Frenchman'

As the 2.4 hours equates to the total productive time of a French factory worker after lunch and coffee breaks are taken into account.

#### @David D. Hagood

2,000,000 Km/h is not 0.2%, it's 0.185313386221196% - at best rounded to 0.19%

#### Re: @David D. Hagood

Lovely, just what is needed. Who's up for a mid week sig fig smack down? Yeah, that's what I thought.

#### Re: @David D. Hagood

We were given 1 significant digit of precision, any conversion expressing more than one significant digit of precision is wrong. Go back to science class.

#### Galactic scale canival ride

Weeeeeeeeeeeeeeeeeeeeeeee!

#### Re: Galactic scale canival ride

Yes. It looks like they are developing a Spindizzy (James Blish: Cities in Flight). All we need now to prove it is to watch it jump across space.

#### Re: Galactic scale canival (sic) ride

Perhaps a galactic hamster ride?

#### Pretty slow

Only 0.18% of c

c is pretty fast.

#### Re: Pretty slow

Well, it's relatively fast.

#### Re: Pretty slow

It takes a special kind of person to understand your joke.

#### Re: Pretty slow

In general, I think these 3 comments show who knows science and who watched Big Bang Theory.

Why did I read "Neckbeard star orbits black hole at record speed"?

I .... gotta get out of this "industry".

#### So how long until that black hole eats its companion?

That's going to be a big x-ray event.

#### Bathtub effect, when the plug is pulled?

"Glug, Glug, Glug, Glug , Glug" ?

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#### Obligatory Python reference!

"The universe itself keeps on expanding and expanding

In all of the directions it can whizz

As fast as it can go, at the speed of light, you know,

Twelve million miles a minute, and that's the fastest speed there is.

So remember, when you're feeling very small and insecure,

How amazingly unlikely is your birth,

And pray that there's intelligent life somewhere up in space,

'Cause there's bugger all down here on Earth!"

#### Re: Obligatory Python reference!

And the fact somebody down-voted you is evidence of the truth of the last line....

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