Cool astronomy photos

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Re: Cool astronomy photos

Post by Doctor X » Tue Apr 10, 2018 12:04 pm

Image


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Re: Cool astronomy photos

Post by Anaxagoras » Wed Apr 11, 2018 7:17 am

Image

Explanation: Was this flash the farthest star yet seen? An unexpected flash of light noticed fortuitously on Hubble Space Telescope images may prove to be not only an unusual gravitational lensing event but also an image of a normal star 100 times farther away than any star previously imaged individually. The featured image shows the galaxy cluster on the left complete with many yellowish galaxies, while on the right is an expanded square where a source appeared in 2016 that was not evident in 2011. The spectrum and variability of this source are strangely unlike a supernova, but rather appear more consistent with a normal blue supergiant star magnified by about a factor of 2000 by a confluence of aligned gravitational lenses. Dubbed Icarus, the source is in a galaxy well behind the galaxy cluster and far across the universe -- at redshift 1.5. If the lens interpretation is correct and Icarus is not an exploding star, further observations of it and other similarly magnified stars could give information about the stellar and dark matter content in the galaxy cluster and the universe.
:notsure:
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Re: Cool astronomy photos

Post by Bruce » Thu Apr 12, 2018 1:49 am

Oh, wait. It's just a stain on the computer screen...... :P
Such potential!

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Re: Cool astronomy photos

Post by sparks » Thu Apr 12, 2018 1:55 am

Pizza smudge!
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Re: Cool astronomy photos

Post by Doctor X » Fri Apr 13, 2018 6:08 am

Honk?

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Re: Cool astronomy photos

Post by sparks » Sat Apr 14, 2018 12:58 am

Windex and a soft clean cloth.

Wait....
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Re: Cool astronomy photos

Post by Witness » Sat Apr 14, 2018 2:00 am

Image

These are volcanoes: Io in infrared by Juno.

Details: https://www.theatlantic.com/science/archive/2018/04/io-jupiter-volcano/557765/.

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Re: Cool astronomy photos

Post by Witness » Mon Apr 16, 2018 12:19 am

https://www.youtube.com/watch?v=Zg9Y4g4e1mU
NASA wrote:This evocative movie of four planets more massive than Jupiter orbiting the young star HR 8799 is a composite of sorts, including images taken over seven years at the W.M. Keck observatory in Hawaii.

The movie clearly doesn’t show full orbits, which will take many more years to collect. The closest-in planet circles the star in around 40 years; the furthest takes more than 400 years.

But as described by Jason Wang, an astronomy graduate student at the University of California, Berkeley, researchers think that the four planets may well be in resonance with each other.

In this case it’s a one-two-four-eight resonance, meaning that each planet has an orbital period in nearly precise ratio with the others in the system.

The black circle in the center of the image is part of the observing and analyzing effort to block the blinding light of the star, and thus make the planets visible.
https://astrobiology.nasa.gov/news/a-four-planet-system-in-orbit-directly-imaged-and-remarkable/

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Re: Cool astronomy photos

Post by Anaxagoras » Tue Apr 17, 2018 8:31 am

Hello DARKNESS, my old friend.

Hello DARKNESS: Physicists team up with astronomers to commission the most advanced camera in the world

Somewhere in the vastness of the universe another habitable planet likely exists. And it may not be that far—astronomically speaking—from our own solar system.

Distinguishing that planet's light from its star, however, can be problematic. But an international team led by UC Santa Barbara physicist Benjamin Mazin has developed a new instrument to detect planets around the nearest stars. It is the world's largest and most advanced superconducting camera. The team's work appears in the journal Publications of the Astronomical Society of the Pacific.

The group, which includes Dimitri Mawet of the California Institute of Technology and Eugene Serabyn of the Jet Propulsion Laboratory in Pasadena, California, created a device named DARKNESS (the DARK-speckle Near-infrared Energy-resolved Superconducting Spectrophotometer), the first 10,000-pixel integral field spectrograph designed to overcome the limitations of traditional semiconductor detectors. It employs Microwave Kinetic Inductance Detectors that, in conjunction with a large telescope and an adaptive optics system, enable direct imaging of planets around nearby stars.

"Taking a picture of an exoplanet is extremely challenging because the star is much brighter than the planet, and the planet is very close to the star," said Mazin, who holds the Worster Chair in Experimental Physics at UCSB.

Funded by the National Science Foundation, DARKNESS is an attempt to overcome some of the technical barriers to detecting planets. It can take the equivalent of thousands of frames per second without any read noise or dark current, which are among the primary sources of error in other instruments. It also has the ability to determine the wavelength and arrival time of every photon. This time domain information is important for distinguishing a planet from scattered or refracted light called speckles.

"This technology will lower the contrast floor so that we can detect fainter planets," Mazin explained. "We hope to approach the photon noise limit, which will give us contrast ratios close to 10-8, allowing us to see planets 100 million times fainter than the star. At those contrast levels, we can see some planets in reflected light, which opens up a whole new domain of planets to explore. The really exciting thing is that this is a technology pathfinder for the next generation of telescopes."

Designed for the 200-inch Hale telescope at the Palomar Observatory near San Diego, California, DARKNESS acts as both the science camera and a focal-plane wave-front sensor, quickly measuring the light and then sending a signal back to a rubber mirror that can form into a new shape 2,000 times a second. This process cleans up the atmospheric distortion that causes stars to twinkle by suppressing the starlight and enabling higher contrast ratios between the star and the planet.

During the past year and a half, the team has employed DARKNESS on four runs at Palomar to work out bugs. The researchers will return in May to take more data on certain planets and to demonstrate their progress in improving the contrast ratio.

"Our hope is that one day we will be able to build an instrument for the Thirty Meter Telescope planned for Mauna Kea on the island of Hawaii or La Palma," Mazin said. "With that, we'll be able to take pictures of planets in the habitable zones of nearby low mass stars and look for life in their atmospheres. That's the long-term goal and this is an important step toward that."


Read more at: https://phys.org/news/2018-04-darkness- ... n.html#jCp
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Re: Cool astronomy photos

Post by Doctor X » Tue Apr 17, 2018 11:17 am

Honk?

--J.D.
Mob of the Mean: Free beanie, cattle-prod and Charley Fan Club!
"Doctor X is just treating you the way he treats everyone--as subhuman crap too dumb to breathe in after you breathe out."--Don
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"It was the criticisms of Doc X, actually, that let me see more clearly how far the hypocrisy had gone."--clarsct
"I'd leave it up to Doctor X who has been a benevolent tyrant so far."--Grammatron
"Indeed you are a river to your people.
Shit. That's going to end up in your sig."--Pyrrho
"Try a twelve step program and accept Doctor X as your High Power."--asthmatic camel
"just like Doc X said." --gnome

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Re: Cool astronomy photos

Post by shemp » Wed Apr 18, 2018 2:45 am

Trump will kill the funding. Just for laughs.
"It is not I who is mad! It is I who is crazy!" -- Ren Hoek

"[... it seems most strange that... ] the Creator of Heaven and Earth resorted to the womb of a certain Jewish lady, grew there for nine months and was born as an infant, and afterwards grew up and was betrayed into the hands of his enemies who sentenced him to death and executed him, and that afterwards... he came to life and returned to his original place. The mind of a Jew, or any other person, simply cannot tolerate these assertions. If you have listened all your life to the priests who have filled your brain and the marrow of your bones with this doctrine, and it has settled into you because of that accustomed habit. [I would argue that if you were hearing these ideas for the first time, now, as a grown adult], you would never have accepted them." -- Rabbi Moses ben Nahman, defending the Talmud at the Disputation of Barcelona, July 1263.

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Re: Cool astronomy photos

Post by Anaxagoras » Thu Apr 19, 2018 1:31 am



Update to this. Launched today:

NASA launches TESS exoplanet-hunting satellite into space

NASA launched its new planet-hunting satellite into orbit today on a two-year mission to scour nearby star systems for alien worlds that might harbor life.

TESS, short for Transiting Exoplanet Survey Satellite, lifted off at 6:51 p.m. EDT from the Cape Canaveral Air Force Station in Florida aboard a SpaceX Falcon 9 rocket. The launch was originally scheduled for Monday (April 16) but was postponed to allow time for "additional GNC analysis," a reference to the rocket's guidance, navigation, and control systems.
What will TESS find? Ricker said not knowing is what makes the mission so exciting. “If you go out with a very sensitive instrument and look in a completely unbiased way, you find stuff that is completely unexpected,” he said. “That’s to me what’s exciting.”

TESS will build upon the legacy of NASA’s Kepler Space Telescope, which launched in 2009 and has since identified more than 2,300 confirmed exoplanets. But TESS will be gazing at star systems that are much closer than those studied by Kepler, Ricker said.
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Re: Cool astronomy photos

Post by shemp » Thu Apr 19, 2018 1:59 am

I hope they find the Robinson family. But not Dr. Smith.
"It is not I who is mad! It is I who is crazy!" -- Ren Hoek

"[... it seems most strange that... ] the Creator of Heaven and Earth resorted to the womb of a certain Jewish lady, grew there for nine months and was born as an infant, and afterwards grew up and was betrayed into the hands of his enemies who sentenced him to death and executed him, and that afterwards... he came to life and returned to his original place. The mind of a Jew, or any other person, simply cannot tolerate these assertions. If you have listened all your life to the priests who have filled your brain and the marrow of your bones with this doctrine, and it has settled into you because of that accustomed habit. [I would argue that if you were hearing these ideas for the first time, now, as a grown adult], you would never have accepted them." -- Rabbi Moses ben Nahman, defending the Talmud at the Disputation of Barcelona, July 1263.

"God is the supreme excuse for human adults to absolve themselves of any obligation to preserve natural resources for their own children during their lifetime." -- Gene Ray

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Re: Cool astronomy photos

Post by Witness » Thu Apr 19, 2018 2:56 am

https://www.youtube.com/watch?v=By6sZ6RGCEQ
APOD wrote:What would it look like to fly over the North Pole of Jupiter? A fictional animation made from real images and data captured by NASA's Juno spacecraft shows an answer. Since the pole is presently in shadow, the video uses infrared light emitted by Jupiter -- specifically an infrared color where the hottest features glows the brightest. As the animation starts, Juno zooms in on the enormous world. Soon, one of the eight cyclones orbiting the North Pole is featured. One by one, all eight cyclones circling the pole are inspected, each the size of an entire continent on Earth, and each containing bumpy and fragmented spiral walls. The virtual trip ends with a zoom out. Studying Jovian cyclones helps humanity to better understand dangerous storm systems that occur here on Earth. Juno has recently concluded another close pass by Jupiter -- Perijove 12 -- and seems healthy enough to complete several more of the two-month orbits.
https://apod.nasa.gov/apod/ap180416.html

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Re: Cool astronomy photos

Post by Rob Lister » Thu Apr 19, 2018 10:21 am

Anaxagoras wrote:


Update to this. Launched today:

NASA launches TESS exoplanet-hunting satellite into space

NASA launched its new planet-hunting satellite into orbit today on a two-year mission to scour nearby star systems for alien worlds that might harbor life.

TESS, short for Transiting Exoplanet Survey Satellite, lifted off at 6:51 p.m. EDT from the Cape Canaveral Air Force Station in Florida aboard a SpaceX Falcon 9 rocket. The launch was originally scheduled for Monday (April 16) but was postponed to allow time for "additional GNC analysis," a reference to the rocket's guidance, navigation, and control systems.
What will TESS find? Ricker said not knowing is what makes the mission so exciting. “If you go out with a very sensitive instrument and look in a completely unbiased way, you find stuff that is completely unexpected,” he said. “That’s to me what’s exciting.”

TESS will build upon the legacy of NASA’s Kepler Space Telescope, which launched in 2009 and has since identified more than 2,300 confirmed exoplanets. But TESS will be gazing at star systems that are much closer than those studied by Kepler, Ricker said.



Here's the landing. Orgasm at 1:40.

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Re: Cool astronomy photos

Post by ed » Thu Apr 19, 2018 10:53 am

Studying Jovian cyclones helps humanity to better understand dangerous storm systems that occur here on Earth.


Can we just agree that we don't have to justify every cool thing with some strained claim that it "helps humanity"?

Cool is it's own justification.

Look at me, for example.
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Re: Cool astronomy photos

Post by Anaxagoras » Fri Apr 20, 2018 1:38 am

A fool thinks himself to be wise, but a wise man knows himself to be a fool.
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Re: Cool astronomy photos

Post by Doctor X » Fri Apr 20, 2018 5:28 am

Where is the Reliant?

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"Doctor X is just treating you the way he treats everyone--as subhuman crap too dumb to breathe in after you breathe out."--Don
DocX: FTW.--sparks
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"Never sorry to make a racist Fucktard cry."--His Humble MagNIfIcence
"It was the criticisms of Doc X, actually, that let me see more clearly how far the hypocrisy had gone."--clarsct
"I'd leave it up to Doctor X who has been a benevolent tyrant so far."--Grammatron
"Indeed you are a river to your people.
Shit. That's going to end up in your sig."--Pyrrho
"Try a twelve step program and accept Doctor X as your High Power."--asthmatic camel
"just like Doc X said." --gnome

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Re: Cool astronomy photos

Post by sparks » Fri Apr 20, 2018 4:11 pm

She done blowed up real good!
"To the last, I grapple with thee.." And shit. :)
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Re: Cool astronomy photos

Post by Witness » Fri Apr 20, 2018 10:26 pm

ed wrote:Can we just agree that we don't have to justify every cool thing with some strained claim that it "helps humanity"?

Cool is it's own justification.

Look at me, for example.
I agree, that vapid comment irked me too. As for the last part, nobody ever claimed you were useful or that you could (shudder) "help humanity"… :twisted:




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