#astrophysics


# space    

roger penrose's cyclical cosmology revisited

Penrose and Gurzadyan respond to their critics without offering anything new for the debate.
roger penrose's cyclical cosmology revisited

# space    

how to navigate in deep space with dead stars

Could we use neutron stars as navigational landmarks when traveling through interstellar space?
how to navigate in deep space with dead stars

# space    

roger penrose hunts for traces of other big bangs

Roger Penrose thinks he discovered traces of previous Big Bangs in the Cosmic Microwave Background Radiation, but his evidence for it seem thin and the consequences are left unaddressed.
roger penrose hunts for traces of other big bangs

# space    

learning about stars by listening to their hum

Want to get a good guess as to how old a star is? Just listen to its hum...
learning about stars by listening to their hum

# space    

io9 already planning to colonize gliese 581g…

Ads for extrasolar attractions and preemptively naming cities on an alien world are all well and good. But what will it take to really start colonizing a distant planet?
io9 already planning to colonize gliese 581g…

# space    

repent, for the end of time is relatively near!

According to four physicist time will keep going for billions of years until one day it will just... stop.
repent, for the end of time is relatively near!

# space    

the ongoing search for a simpler, neater universe

While many physicists are trying to dive deeper and deeper into the complexities of space and time, others are looking for a much simpler explanation of the universe's mysteries.
the ongoing search for a simpler, neater universe

# space    

the birth of a supermassive monster, revisited

While we still don't know how supermassive black holes get as heavy and large as they are, but we have a few ideas...
the birth of a supermassive monster, revisited

# space    

alt cosmology paper reinvents the big crunch

Another day, another example of comic numerology making big claims and falling on its face.
alt cosmology paper reinvents the big crunch

# space    

the biggest stars in the cosmos, revisited

Astronomers find a star that's larger, brighter, and heavier than what we thought could still exist.
the biggest stars in the cosmos, revisited

# space    

do quasars break the laws of physics?

Something is wrong in the data we get when we measure distances to far away quasars to see how fast the universe is expanding.
do quasars break the laws of physics?

# space    

yes, we're still stuck with dark matter

The survey which figured out the right way to view the remaining visible universe has been misconstrued to mean we no longer need to investigate dark matter.
yes, we're still stuck with dark matter

# space    

newsflash: most of missing universe found

Some 90% of the visible universe appeared to be missing. We finally found the right tools to see it...
newsflash: most of missing universe found

# space    

getting information from a black hole's maw

What happens to particles swallowed by a black hole? The answer could either confirm our understanding of the universe or alter everything we know about it.
getting information from a black hole's maw

# space    

in the beginning, there was the black hole

At the dawn of the universe, enormous black holes were among the first things to be born, and at the end of it, they will be among the last to die.
in the beginning, there was the black hole

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