How fast is the universe expanding?

The Universe is expanding, but how quickly is it expanding? How far away is everything getting from everything else? And how do we know any of this anyway?

Where is the closest black hole?

You know that saying, "keep your friends close, but keep your enemies closer?" That advice needs to go right out the window when we're talking black holes. They're the worst enemies you could have and you want them as far ...

Hubble detects giant 'cannonballs' shooting from star

Great balls of fire! NASA's Hubble Space Telescope has detected superhot blobs of gas, each twice as massive as the planet Mars, being ejected near a dying star. The plasma balls are zooming so fast through space it would ...

Scientists find potentially habitable planet near Earth

(PhysOrg.com) -- A team of planet hunters led by astronomers at the University of California, Santa Cruz, and the Carnegie Institution of Washington has announced the discovery of an Earth-sized planet (three times the mass ...

Surprising giant ring-like structure in the universe

(Phys.org)—Five billion light years is a distance almost inconceivable, even on a cosmic scale. To better illustrate the extent of this physical quantity, it's enough to say that 35,000 galaxies the size of our Milky Way ...

Baby star blasts jets of water into space

Astronomers have found a nascent star 750 light years from earth that shoots colossal jets of water -- a cosmic fire hose -- out its poles in bullet-like pulses.

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