Space
Ancient black holes ruled out as source of all dark matter
One way to solve the dark matter problem is to chalk it up to black holes formed moments after the big bang, but they can鈥檛 account for all the dark matter
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Space
Bizarre supernova may be powered by hidden disc of dust and gas
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Physics
Most distant quasar ever seen is way too big for our universe
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Space
Weird tiny galaxies found hiding in Hubble鈥檚 Ultra Deep Field
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Space
Mysterious gamma rays in Crab nebula traced to pulsar winds
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Physics
We’ve found a bunch of dwarf galaxies we thought didn’t exist
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Earth
Light pollution is set to double between now and 2050
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Space
Signs of running water on Mars dunes are probably just dry sand
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Space
We got a good look at the interstellar asteroid and it鈥檚 weird
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Humans
The message we’re sending to nearby aliens is no threat to Earth
Critics fear provoking hostile extraterrestrials by beaming messages to our closest exoplanets but there's no need to worry, says METI president Douglas Vakoch
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Physics
The New Horizons spacecraft is heading towards a mystery rock
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Space
We may know why Jupiter’s Great Red Spot is red instead of white
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Space
We just sent a message to try to talk to aliens on another world
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Space
A layer of haze keeps Pluto鈥檚 atmosphere extremely cold
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