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Two Stars Collided And Solved Half of Astronomy's Problems. Now What? (fivethirtyeight.com)

"It's hard to overstate the enormous leap forward that astronomy took on August 17, 2017," reports an article shared by schwit1: On that day, astronomers bore witness to the titanic collision of two neutron stars, the densest things in the universe besides black holes. In the collision's wake, astronomers answered multiple major questions that have dominated their field for a generation. They solved the origin of gamma-ray bursts, mysterious jets of hardcore radiation that could potentially roast Earth. They glimpsed the forging of heavy metals, like gold and platinum. They measured the rate at which the expansion of the universe is accelerating. They caught light at the same time as gravitational waves, confirmation that waves move at the speed of light. And there was more, and there is much more yet to come from this discovery... "Now it's a question of, do we have the right instrumentation for doing all the follow-up work?" said Edo Berger, an astronomer at Harvard who studies explosive cosmic events. "Do we have the right telescopes? What's going to happen when we have not just one event, but one a month, or one a week -- how do we deal with that flood...?"

The August 17 gravitational wave gave astronomers a glimpse at an entirely different universe. For most of history, they've studied stars and galaxies, which seem static and unchanging from the vantage point of human timescales... But GW170817 revealed a universe alive, pulsating with creation and destruction on human timescales... [T]he event itself unfolded in less than three human-designated weeks. This faster timescale is "pushing the way astronomy is done," Berger said... In space, the Fermi space telescope glimpsed a burst of gamma radiation. Within an hour, astronomers made six independent discoveries of a bright, fast-fading flash: A new phenomenon called a kilonova... Nine days later, X-rays streamed in, and after 16 days, radio waves arrived, too. Each type of information tells astronomers something different. Richard O'Shaughnessy, an astronomer at the Rochester Institute of Technology, describes the discovery as a "Rosetta stone for astronomy."

"What this has done is provide one event that unites all these different threads of astronomy at once," he said. "Like, all our dreams have come true, and they came true now..." Thanks to the August 17 event, astronomers now know what to look for. Soon, they will be able to sift through an embarrassment of neutron-star mergers and other phenomena... And they are talking about how to turn their eyes to the sky, at a moment's notice, the next time the universe throws something big their way. "It's a wonderful time, it's a terrifying time," O'Shaughnessy said. "I can't really capture the wonder and the horror and glee and happiness."

6 of 171 comments (clear)

  1. Re: Now we stop wasting money on this by Anonymous Coward · · Score: 5, Insightful

    Then why are you wasting time reading and responding to this article? Put down the keyboard, go forth and do good.

  2. Re:Now we stop wasting money on this by Anonymous Coward · · Score: 4, Insightful

    According to the summary, it sounds like astronomy just got much more efficient and less wasteful. I do agree that every so often now people, especially adults with their basic education long behind them, need a remainder how observing the sky and the human survival are related to each other, all the way from the stone age to the early agricultural societies and the present.

  3. Re:Now we stop wasting money on this by Anonymous Coward · · Score: 4, Insightful

    You're right. Let's just sit around not learning anything about the universe which created us and is completely integral to our existence. Staying ignorant and uneducated is the way to go!

  4. Re: Why do writers do this? by ShanghaiBill · · Score: 4, Insightful

    Is there a "singularity inside a blackhole"?

    Perhaps. But it is not a falsifiable hypothesis. We don't know, and we don't know if there will ever be a way to know.

  5. Re:Why do writers do this? by Anonymous Coward · · Score: 2, Insightful

    Matter falls into a black hole and leaves one universe. In another universe a big bang happens as that universe is formed. So universes bud off from each other, and the budding point is a black hole.

    Cool. Now prove it.

  6. Re:cold thinking by Immerman · · Score: 3, Insightful

    You have a deeply flawed understanding of both rationality and human nature. Hint, there's no such thing as a rational human - only humans that are capable of thinking (mostly) rationally when they need to. Nobody goes into science for rational reasons - the hours are long, the pay sucks, and the odds of monetizing a discovery make the lottery look like a good investment.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.